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Split ValueNode into a separate class to avoid possible race-condition in class loading. Modified ArrayPathToken to be super-class of ArrayIndex/ArraySlice token because IntelliJ warned about null pointer exception possibilities. Removed redundant boolean checks. Removed use of StringBuffer -> StringBuilder. Removed dangling ;pull/416/head
Elias Ross
7 years ago
23 changed files with 893 additions and 838 deletions
@ -0,0 +1,662 @@
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package com.jayway.jsonpath.internal.filter; |
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import java.math.BigDecimal; |
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import java.util.ArrayList; |
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import java.util.Collection; |
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import java.util.Collections; |
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import java.util.Iterator; |
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import java.util.List; |
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import java.util.Map; |
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import java.util.regex.Pattern; |
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import com.jayway.jsonpath.Configuration; |
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import com.jayway.jsonpath.JsonPathException; |
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import com.jayway.jsonpath.Option; |
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import com.jayway.jsonpath.PathNotFoundException; |
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import com.jayway.jsonpath.Predicate; |
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import com.jayway.jsonpath.internal.Path; |
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import com.jayway.jsonpath.internal.Utils; |
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import com.jayway.jsonpath.internal.path.PathCompiler; |
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import com.jayway.jsonpath.internal.path.PredicateContextImpl; |
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import com.jayway.jsonpath.spi.json.JsonProvider; |
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import net.minidev.json.parser.JSONParser; |
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import net.minidev.json.parser.ParseException; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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/** |
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* Moved these nodes out of the ValueNode abstract class. |
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* This is to avoid this possible issue: |
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* |
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* Classes that refer to their own subclasses in their static initializers or in static fields. |
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* Such references can cause JVM-level deadlocks in multithreaded environment, when |
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* one thread tries to load superclass and another thread tries to load subclass at the same time. |
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*/ |
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public interface ValueNodes { |
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NullNode NULL_NODE = new NullNode(); |
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BooleanNode TRUE = new BooleanNode("true"); |
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BooleanNode FALSE = new BooleanNode("false"); |
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UndefinedNode UNDEFINED = new UndefinedNode(); |
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//----------------------------------------------------
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//
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// ValueNode Implementations
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//
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//----------------------------------------------------
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class PatternNode extends ValueNode { |
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private final String pattern; |
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private final Pattern compiledPattern; |
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PatternNode(CharSequence charSequence) { |
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String tmp = charSequence.toString(); |
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int begin = tmp.indexOf('/'); |
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int end = tmp.lastIndexOf('/'); |
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int flags = tmp.endsWith("/i") ? Pattern.CASE_INSENSITIVE : 0; |
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this.pattern = tmp.substring(begin + 1, end); |
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this.compiledPattern = Pattern.compile(pattern, flags); |
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} |
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PatternNode(Pattern pattern) { |
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this.pattern = pattern.pattern(); |
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this.compiledPattern = pattern; |
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} |
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Pattern getCompiledPattern() { |
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return compiledPattern; |
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} |
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@Override |
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public Class<?> type(Predicate.PredicateContext ctx) { |
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return Void.TYPE; |
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} |
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public boolean isPatternNode() { |
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return true; |
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} |
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public PatternNode asPatternNode() { |
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return this; |
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} |
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@Override |
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public String toString() { |
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String flags = ""; |
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if((compiledPattern.flags() & Pattern.CASE_INSENSITIVE) == Pattern.CASE_INSENSITIVE){ |
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flags = "i"; |
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} |
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if(!pattern.startsWith("/")){ |
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return "/" + pattern + "/" + flags; |
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} else { |
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return pattern; |
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} |
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} |
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@Override |
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public boolean equals(Object o) { |
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if (this == o) return true; |
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if (!(o instanceof PatternNode)) return false; |
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PatternNode that = (PatternNode) o; |
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return !(compiledPattern != null ? !compiledPattern.equals(that.compiledPattern) : that.compiledPattern != null); |
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} |
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} |
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class JsonNode extends ValueNode { |
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private final Object json; |
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private final boolean parsed; |
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JsonNode(CharSequence charSequence) { |
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json = charSequence.toString(); |
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parsed = false; |
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} |
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JsonNode(Object parsedJson) { |
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json = parsedJson; |
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parsed = true; |
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} |
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@Override |
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public Class<?> type(Predicate.PredicateContext ctx) { |
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if(isArray(ctx)) return List.class; |
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else if(isMap(ctx)) return Map.class; |
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else if(parse(ctx) instanceof Number) return Number.class; |
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else if(parse(ctx) instanceof String) return String.class; |
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else if(parse(ctx) instanceof Boolean) return Boolean.class; |
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else return Void.class; |
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} |
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public boolean isJsonNode() { |
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return true; |
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} |
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public JsonNode asJsonNode() { |
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return this; |
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} |
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public ValueNode asValueListNode(Predicate.PredicateContext ctx){ |
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if(!isArray(ctx)){ |
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return UNDEFINED; |
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} else { |
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return new ValueListNode(Collections.unmodifiableList((List) parse(ctx))); |
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} |
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} |
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public Object parse(Predicate.PredicateContext ctx){ |
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try { |
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return parsed ? json : new JSONParser(JSONParser.MODE_PERMISSIVE).parse(json.toString()); |
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} catch (ParseException e) { |
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throw new IllegalArgumentException(e); |
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} |
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} |
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public boolean isParsed() { |
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return parsed; |
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} |
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public Object getJson() { |
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return json; |
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} |
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public boolean isArray(Predicate.PredicateContext ctx) { |
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return parse(ctx) instanceof List; |
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} |
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public boolean isMap(Predicate.PredicateContext ctx) { |
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return parse(ctx) instanceof Map; |
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} |
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public int length(Predicate.PredicateContext ctx) { |
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return isArray(ctx) ? ((List<?>) parse(ctx)).size() : -1; |
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} |
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public boolean isEmpty(Predicate.PredicateContext ctx) { |
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if (isArray(ctx) || isMap(ctx)) return ((Collection<?>) parse(ctx)).size() == 0; |
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else if((parse(ctx) instanceof String)) return ((String)parse(ctx)).length() == 0; |
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return true; |
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} |
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@Override |
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public String toString() { |
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return json.toString(); |
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} |
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public boolean equals(JsonNode jsonNode, Predicate.PredicateContext ctx) { |
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if (this == jsonNode) return true; |
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return !(json != null ? !json.equals(jsonNode.parse(ctx)) : jsonNode.json != null); |
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} |
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@Override |
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public boolean equals(Object o) { |
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if (this == o) return true; |
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if (!(o instanceof JsonNode)) return false; |
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JsonNode jsonNode = (JsonNode) o; |
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return !(json != null ? !json.equals(jsonNode.json) : jsonNode.json != null); |
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} |
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} |
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class StringNode extends ValueNode { |
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private final String string; |
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private boolean useSingleQuote = true; |
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StringNode(CharSequence charSequence, boolean escape) { |
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if (escape && charSequence.length() > 1) { |
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char open = charSequence.charAt(0); |
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char close = charSequence.charAt(charSequence.length()-1); |
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if (open == '\'' && close == '\'') { |
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charSequence = charSequence.subSequence(1, charSequence.length()-1); |
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} else if (open == '"' && close == '"') { |
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charSequence = charSequence.subSequence(1, charSequence.length()-1); |
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useSingleQuote = false; |
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} |
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string = Utils.unescape(charSequence.toString()); |
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} else { |
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string = charSequence.toString(); |
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} |
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} |
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@Override |
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public NumberNode asNumberNode() { |
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BigDecimal number = null; |
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try { |
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number = new BigDecimal(string); |
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} catch (NumberFormatException nfe){ |
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return NumberNode.NAN; |
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} |
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return new NumberNode(number); |
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} |
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public String getString() { |
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return string; |
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} |
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public int length(){ |
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return getString().length(); |
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} |
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public boolean isEmpty(){ |
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return getString().isEmpty(); |
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} |
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public boolean contains(String str) { |
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return getString().contains(str); |
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} |
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@Override |
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public Class<?> type(Predicate.PredicateContext ctx) { |
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return String.class; |
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} |
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public boolean isStringNode() { |
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return true; |
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} |
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public StringNode asStringNode() { |
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return this; |
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} |
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@Override |
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public String toString() { |
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String quote = useSingleQuote ? "'" : "\""; |
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return quote + Utils.escape(string, true) + quote; |
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} |
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@Override |
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public boolean equals(Object o) { |
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if (this == o) return true; |
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if (!(o instanceof StringNode) && !(o instanceof NumberNode)) return false; |
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StringNode that = ((ValueNode) o).asStringNode(); |
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return !(string != null ? !string.equals(that.getString()) : that.getString() != null); |
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} |
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} |
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class NumberNode extends ValueNode { |
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public static NumberNode NAN = new NumberNode((BigDecimal)null); |
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private final BigDecimal number; |
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NumberNode(BigDecimal number) { |
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this.number = number; |
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} |
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NumberNode(CharSequence num) { |
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number = new BigDecimal(num.toString()); |
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} |
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@Override |
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public StringNode asStringNode() { |
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return new StringNode(number.toString(), false); |
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} |
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public BigDecimal getNumber() { |
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return number; |
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} |
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@Override |
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public Class<?> type(Predicate.PredicateContext ctx) { |
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return Number.class; |
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} |
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public boolean isNumberNode() { |
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return true; |
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} |
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public NumberNode asNumberNode() { |
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return this; |
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} |
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@Override |
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public String toString() { |
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return number.toString(); |
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} |
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@Override |
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public boolean equals(Object o) { |
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if (this == o) return true; |
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if (!(o instanceof NumberNode) && !(o instanceof StringNode)) return false; |
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NumberNode that = ((ValueNode)o).asNumberNode(); |
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if(that == NumberNode.NAN){ |
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return false; |
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} else { |
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return number.compareTo(that.number) == 0; |
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} |
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} |
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} |
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class BooleanNode extends ValueNode { |
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private final Boolean value; |
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private BooleanNode(CharSequence boolValue) { |
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value = Boolean.parseBoolean(boolValue.toString()); |
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} |
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@Override |
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public Class<?> type(Predicate.PredicateContext ctx) { |
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return Boolean.class; |
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} |
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public boolean isBooleanNode() { |
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return true; |
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} |
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public BooleanNode asBooleanNode() { |
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return this; |
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} |
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public boolean getBoolean() { |
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return value; |
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} |
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@Override |
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public String toString() { |
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return value.toString(); |
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} |
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@Override |
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public boolean equals(Object o) { |
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if (this == o) return true; |
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if (!(o instanceof BooleanNode)) return false; |
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BooleanNode that = (BooleanNode) o; |
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return !(value != null ? !value.equals(that.value) : that.value != null); |
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} |
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} |
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class ClassNode extends ValueNode { |
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private final Class clazz; |
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ClassNode(Class clazz) { |
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this.clazz = clazz; |
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} |
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@Override |
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public Class<?> type(Predicate.PredicateContext ctx) { |
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return Class.class; |
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} |
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public boolean isClassNode() { |
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return true; |
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} |
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public ClassNode asClassNode() { |
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return this; |
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} |
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public Class getClazz() { |
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return clazz; |
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} |
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@Override |
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public String toString() { |
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return clazz.getName(); |
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} |
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@Override |
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public boolean equals(Object o) { |
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if (this == o) return true; |
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if (!(o instanceof ClassNode)) return false; |
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ClassNode that = (ClassNode) o; |
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return !(clazz != null ? !clazz.equals(that.clazz) : that.clazz != null); |
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} |
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} |
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class NullNode extends ValueNode { |
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private NullNode() {} |
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@Override |
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public Class<?> type(Predicate.PredicateContext ctx) { |
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return Void.class; |
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} |
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@Override |
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public boolean isNullNode() { |
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return true; |
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} |
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@Override |
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public NullNode asNullNode() { |
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return this; |
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} |
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@Override |
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public String toString() { |
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return "null"; |
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} |
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@Override |
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public boolean equals(Object o) { |
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if (this == o) return true; |
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if (!(o instanceof NullNode)) return false; |
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return true; |
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} |
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} |
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class UndefinedNode extends ValueNode { |
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@Override |
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public Class<?> type(Predicate.PredicateContext ctx) { |
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return Void.class; |
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} |
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public UndefinedNode asUndefinedNode() { |
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return this; |
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} |
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public boolean isUndefinedNode() { |
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return true; |
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} |
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@Override |
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public boolean equals(Object o) { |
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return false; |
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} |
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} |
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class PredicateNode extends ValueNode { |
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private final Predicate predicate; |
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public PredicateNode(Predicate predicate) { |
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this.predicate = predicate; |
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} |
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public Predicate getPredicate() { |
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return predicate; |
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} |
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public PredicateNode asPredicateNode() { |
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return this; |
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} |
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@Override |
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public Class<?> type(Predicate.PredicateContext ctx) { |
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return Void.class; |
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} |
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public boolean isPredicateNode() { |
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return true; |
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} |
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@Override |
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public boolean equals(Object o) { |
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return false; |
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} |
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@Override |
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public String toString() { |
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return predicate.toString(); |
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} |
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} |
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class ValueListNode extends ValueNode implements Iterable<ValueNode> { |
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private List<ValueNode> nodes = new ArrayList<ValueNode>(); |
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public ValueListNode(Collection<?> values) { |
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for (Object value : values) { |
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nodes.add(toValueNode(value)); |
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} |
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} |
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public boolean contains(ValueNode node){ |
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return nodes.contains(node); |
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} |
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public boolean subsetof(ValueListNode right) { |
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for (ValueNode leftNode : nodes) { |
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if (!right.nodes.contains(leftNode)) { |
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return false; |
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} |
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} |
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return true; |
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} |
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public List<ValueNode> getNodes() { |
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return Collections.unmodifiableList(nodes); |
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} |
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@Override |
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public Class<?> type(Predicate.PredicateContext ctx) { |
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return List.class; |
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} |
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|
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public boolean isValueListNode() { |
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return true; |
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} |
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|
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public ValueListNode asValueListNode() { |
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return this; |
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} |
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|
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@Override |
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public String toString() { |
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return "[" + Utils.join(",", nodes) + "]"; |
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} |
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|
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@Override |
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public boolean equals(Object o) { |
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if (this == o) return true; |
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if (!(o instanceof ValueListNode)) return false; |
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ValueListNode that = (ValueListNode) o; |
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return nodes.equals(that.nodes); |
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} |
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|
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@Override |
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public Iterator<ValueNode> iterator() { |
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return nodes.iterator(); |
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} |
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} |
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class PathNode extends ValueNode { |
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private static final Logger logger = LoggerFactory.getLogger(PathNode.class); |
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|
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private final Path path; |
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private final boolean existsCheck; |
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private final boolean shouldExist; |
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|
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PathNode(Path path) { |
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this(path, false, false); |
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} |
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|
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PathNode(CharSequence charSequence, boolean existsCheck, boolean shouldExist) { |
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this(PathCompiler.compile(charSequence.toString()), existsCheck, shouldExist); |
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} |
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|
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PathNode(Path path, boolean existsCheck, boolean shouldExist) { |
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this.path = path; |
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this.existsCheck = existsCheck; |
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this.shouldExist = shouldExist; |
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logger.trace("PathNode {} existsCheck: {}", path, existsCheck); |
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} |
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|
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public Path getPath() { |
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return path; |
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} |
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|
||||
public boolean isExistsCheck() { |
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return existsCheck; |
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} |
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|
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public boolean shouldExists() { |
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return shouldExist; |
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} |
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|
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@Override |
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public Class<?> type(Predicate.PredicateContext ctx) { |
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return Void.class; |
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} |
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|
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public boolean isPathNode() { |
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return true; |
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} |
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|
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public PathNode asPathNode() { |
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return this; |
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} |
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|
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public PathNode asExistsCheck(boolean shouldExist) { |
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return new PathNode(path, true, shouldExist); |
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} |
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|
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@Override |
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public String toString() { |
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return existsCheck && ! shouldExist ? Utils.concat("!" , path.toString()) : path.toString(); |
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} |
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|
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public ValueNode evaluate(Predicate.PredicateContext ctx) { |
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if (isExistsCheck()) { |
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try { |
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Configuration c = Configuration.builder().jsonProvider(ctx.configuration().jsonProvider()).options(Option.REQUIRE_PROPERTIES).build(); |
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Object result = path.evaluate(ctx.item(), ctx.root(), c).getValue(false); |
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return result == JsonProvider.UNDEFINED ? FALSE : TRUE; |
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} catch (PathNotFoundException e) { |
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return FALSE; |
||||
} |
||||
} else { |
||||
try { |
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Object res; |
||||
if (ctx instanceof PredicateContextImpl) { |
||||
//This will use cache for document ($) queries
|
||||
PredicateContextImpl ctxi = (PredicateContextImpl) ctx; |
||||
res = ctxi.evaluate(path); |
||||
} else { |
||||
Object doc = path.isRootPath() ? ctx.root() : ctx.item(); |
||||
res = path.evaluate(doc, ctx.root(), ctx.configuration()).getValue(); |
||||
} |
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res = ctx.configuration().jsonProvider().unwrap(res); |
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|
||||
if (res instanceof Number) return ValueNode.createNumberNode(res.toString()); |
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else if (res instanceof String) return ValueNode.createStringNode(res.toString(), false); |
||||
else if (res instanceof Boolean) return ValueNode.createBooleanNode(res.toString()); |
||||
else if (res == null) return NULL_NODE; |
||||
else if (ctx.configuration().jsonProvider().isArray(res)) return ValueNode.createJsonNode(ctx.configuration().mappingProvider().map(res, List.class, ctx.configuration())); |
||||
else if (ctx.configuration().jsonProvider().isMap(res)) return ValueNode.createJsonNode(ctx.configuration().mappingProvider().map(res, Map.class, ctx.configuration())); |
||||
else throw new JsonPathException("Could not convert " + res.toString() + " to a ValueNode"); |
||||
} catch (PathNotFoundException e) { |
||||
return UNDEFINED; |
||||
} |
||||
} |
||||
} |
||||
|
||||
|
||||
} |
||||
} |
||||
@ -0,0 +1,52 @@
|
||||
/* |
||||
* Copyright 2011 the original author or authors. |
||||
* Licensed under the Apache License, Version 2.0 (the "License"); |
||||
* you may not use this file except in compliance with the License. |
||||
* You may obtain a copy of the License at |
||||
* |
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
* |
||||
* Unless required by applicable law or agreed to in writing, software |
||||
* distributed under the License is distributed on an "AS IS" BASIS, |
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
||||
* See the License for the specific language governing permissions and |
||||
* limitations under the License. |
||||
*/ |
||||
package com.jayway.jsonpath.internal.path; |
||||
|
||||
import com.jayway.jsonpath.internal.PathRef; |
||||
|
||||
import static java.lang.String.format; |
||||
|
||||
public class ArrayIndexToken extends ArrayPathToken { |
||||
|
||||
private final ArrayIndexOperation arrayIndexOperation; |
||||
|
||||
ArrayIndexToken(final ArrayIndexOperation arrayIndexOperation) { |
||||
this.arrayIndexOperation = arrayIndexOperation; |
||||
} |
||||
|
||||
@Override |
||||
public void evaluate(String currentPath, PathRef parent, Object model, EvaluationContextImpl ctx) { |
||||
if (!checkArrayModel(currentPath, model, ctx)) |
||||
return; |
||||
if (arrayIndexOperation.isSingleIndexOperation()) { |
||||
handleArrayIndex(arrayIndexOperation.indexes().get(0), currentPath, model, ctx); |
||||
} else { |
||||
for (Integer index : arrayIndexOperation.indexes()) { |
||||
handleArrayIndex(index, currentPath, model, ctx); |
||||
} |
||||
} |
||||
} |
||||
|
||||
@Override |
||||
public String getPathFragment() { |
||||
return arrayIndexOperation.toString(); |
||||
} |
||||
|
||||
@Override |
||||
public boolean isTokenDefinite() { |
||||
return arrayIndexOperation.isSingleIndexOperation(); |
||||
} |
||||
|
||||
} |
||||
@ -0,0 +1,114 @@
|
||||
/* |
||||
* Copyright 2011 the original author or authors. |
||||
* Licensed under the Apache License, Version 2.0 (the "License"); |
||||
* you may not use this file except in compliance with the License. |
||||
* You may obtain a copy of the License at |
||||
* |
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
* |
||||
* Unless required by applicable law or agreed to in writing, software |
||||
* distributed under the License is distributed on an "AS IS" BASIS, |
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
||||
* See the License for the specific language governing permissions and |
||||
* limitations under the License. |
||||
*/ |
||||
package com.jayway.jsonpath.internal.path; |
||||
|
||||
import com.jayway.jsonpath.internal.PathRef; |
||||
import org.slf4j.Logger; |
||||
import org.slf4j.LoggerFactory; |
||||
|
||||
public class ArraySliceToken extends ArrayPathToken { |
||||
|
||||
private static final Logger logger = LoggerFactory.getLogger(ArraySliceToken.class); |
||||
|
||||
private final ArraySliceOperation operation; |
||||
|
||||
ArraySliceToken(final ArraySliceOperation operation) { |
||||
this.operation = operation; |
||||
} |
||||
|
||||
@Override |
||||
public void evaluate(String currentPath, PathRef parent, Object model, EvaluationContextImpl ctx) { |
||||
if (!checkArrayModel(currentPath, model, ctx)) |
||||
return; |
||||
switch (operation.operation()) { |
||||
case SLICE_FROM: |
||||
sliceFrom(currentPath, parent, model, ctx); |
||||
break; |
||||
case SLICE_BETWEEN: |
||||
sliceBetween(currentPath, parent, model, ctx); |
||||
break; |
||||
case SLICE_TO: |
||||
sliceTo(currentPath, parent, model, ctx); |
||||
break; |
||||
} |
||||
} |
||||
|
||||
private void sliceFrom(String currentPath, PathRef parent, Object model, EvaluationContextImpl ctx) { |
||||
int length = ctx.jsonProvider().length(model); |
||||
int from = operation.from(); |
||||
if (from < 0) { |
||||
//calculate slice start from array length
|
||||
from = length + from; |
||||
} |
||||
from = Math.max(0, from); |
||||
|
||||
logger.debug("Slice from index on array with length: {}. From index: {} to: {}. Input: {}", length, from, length - 1, toString()); |
||||
|
||||
if (length == 0 || from >= length) { |
||||
return; |
||||
} |
||||
for (int i = from; i < length; i++) { |
||||
handleArrayIndex(i, currentPath, model, ctx); |
||||
} |
||||
} |
||||
|
||||
private void sliceBetween(String currentPath, PathRef parent, Object model, EvaluationContextImpl ctx) { |
||||
int length = ctx.jsonProvider().length(model); |
||||
int from = operation.from(); |
||||
int to = operation.to(); |
||||
|
||||
to = Math.min(length, to); |
||||
|
||||
if (from >= to || length == 0) { |
||||
return; |
||||
} |
||||
|
||||
logger.debug("Slice between indexes on array with length: {}. From index: {} to: {}. Input: {}", length, from, to, toString()); |
||||
|
||||
for (int i = from; i < to; i++) { |
||||
handleArrayIndex(i, currentPath, model, ctx); |
||||
} |
||||
} |
||||
|
||||
private void sliceTo(String currentPath, PathRef parent, Object model, EvaluationContextImpl ctx) { |
||||
int length = ctx.jsonProvider().length(model); |
||||
if (length == 0) { |
||||
return; |
||||
} |
||||
int to = operation.to(); |
||||
if (to < 0) { |
||||
//calculate slice end from array length
|
||||
to = length + to; |
||||
} |
||||
to = Math.min(length, to); |
||||
|
||||
logger.debug("Slice to index on array with length: {}. From index: 0 to: {}. Input: {}", length, to, toString()); |
||||
|
||||
for (int i = 0; i < to; i++) { |
||||
handleArrayIndex(i, currentPath, model, ctx); |
||||
} |
||||
} |
||||
|
||||
@Override |
||||
public String getPathFragment() { |
||||
return operation.toString(); |
||||
} |
||||
|
||||
@Override |
||||
public boolean isTokenDefinite() { |
||||
return false; |
||||
} |
||||
|
||||
} |
||||
Loading…
Reference in new issue