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JsonPath
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Set2 refactoring

pull/968/head
AdultCensusSalaryPrediction 1 year ago
parent
39428515f5
commit
f3aad94dbb
5 changed files with 101 additions and 57 deletions
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  1. 82
      json-path/src/main/java/com/jayway/jsonpath/JsonPath.java
  2. 35
      json-path/src/main/java/com/jayway/jsonpath/PathEvaluator.java
  3. 4
      json-path/src/main/java/com/jayway/jsonpath/internal/Path.java
  4. 32
      json-path/src/main/java/com/jayway/jsonpath/spi/json/JacksonJsonNodeJsonProvider.java
  5. 5
      json-path/src/main/java/com/jayway/jsonpath/spi/json/JsonLengthCalculator.java

82
json-path/src/main/java/com/jayway/jsonpath/JsonPath.java
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@ -16,6 +16,7 @@ package com.jayway.jsonpath;
import com.jayway.jsonpath.internal.*;
import com.jayway.jsonpath.internal.PathEvaluator;
import com.jayway.jsonpath.internal.path.PathCompiler;
import com.jayway.jsonpath.spi.json.JsonProvider;
@ -139,6 +140,23 @@ public class JsonPath {
return path.isDefinite();
}
// public boolean isFunctionPath() {
// return path.isFunctionPath();
// }
//
// public boolean isRootPath() {
// return path.isRootPath();
// }
public EvaluationContext evaluate(Object document, Object rootDocument, Configuration configuration) {
return evaluate(document, rootDocument, configuration, false);
}
public EvaluationContext evaluate(Object document, Object rootDocument, Configuration configuration, boolean forUpdate) {
EvaluationContext evaluationContext = null;
return resultByConfiguration(document, configuration, evaluationContext);
}
/**
* Applies this JsonPath to the provided json document.
* Note that the document must be identified as either a List or Map by
@ -165,46 +183,8 @@ public class JsonPath {
*/
@SuppressWarnings("unchecked")
public <T> T read(Object jsonObject, Configuration configuration) {
boolean optAsPathList = configuration.containsOption(AS_PATH_LIST);
boolean optAlwaysReturnList = configuration.containsOption(Option.ALWAYS_RETURN_LIST);
boolean optSuppressExceptions = configuration.containsOption(Option.SUPPRESS_EXCEPTIONS);
if (path.isFunctionPath()) {
if (optAsPathList || optAlwaysReturnList) {
if (optSuppressExceptions) {
return (T) (path.isDefinite() ? null : configuration.jsonProvider().createArray());
}
throw new JsonPathException("Options " + AS_PATH_LIST + " and " + ALWAYS_RETURN_LIST + " are not allowed when using path functions!");
}
EvaluationContext evaluationContext = path.evaluate(jsonObject, jsonObject, configuration);
if (optSuppressExceptions && evaluationContext.getPathList().isEmpty()) {
return (T) (path.isDefinite() ? null : configuration.jsonProvider().createArray());
}
return evaluationContext.getValue(true);
} else if (optAsPathList) {
EvaluationContext evaluationContext = path.evaluate(jsonObject, jsonObject, configuration);
if (optSuppressExceptions && evaluationContext.getPathList().isEmpty()) {
return (T) configuration.jsonProvider().createArray();
}
return (T) evaluationContext.getPath();
} else {
EvaluationContext evaluationContext = path.evaluate(jsonObject, jsonObject, configuration);
if (optSuppressExceptions && evaluationContext.getPathList().isEmpty()) {
if (optAlwaysReturnList) {
return (T) configuration.jsonProvider().createArray();
} else {
return (T) (path.isDefinite() ? null : configuration.jsonProvider().createArray());
}
}
Object res = evaluationContext.getValue(false);
if (optAlwaysReturnList && path.isDefinite()) {
Object array = configuration.jsonProvider().createArray();
configuration.jsonProvider().setArrayIndex(array, 0, res);
return (T) array;
} else {
return (T) res;
}
}
PathEvaluator evaluator = new PathEvaluator(path, configuration);
return evaluator.evaluate(jsonObject);
}
/**
@ -218,7 +198,7 @@ public class JsonPath {
public <T> T set(Object jsonObject, Object newVal, Configuration configuration) {
notNull(jsonObject, "json can not be null");
notNull(configuration, "configuration can not be null");
EvaluationContext evaluationContext = path.evaluate(jsonObject, jsonObject, configuration, true);
EvaluationContext evaluationContext = evaluate(jsonObject, jsonObject, configuration, true);
if (evaluationContext.getPathList().isEmpty()) {
boolean optSuppressExceptions = configuration.containsOption(Option.SUPPRESS_EXCEPTIONS);
if (optSuppressExceptions) {
@ -246,7 +226,7 @@ public class JsonPath {
notNull(jsonObject, "json can not be null");
notNull(configuration, "configuration can not be null");
notNull(mapFunction, "mapFunction can not be null");
EvaluationContext evaluationContext = path.evaluate(jsonObject, jsonObject, configuration, true);
EvaluationContext evaluationContext = evaluate(jsonObject, jsonObject, configuration, true);
if (evaluationContext.getPathList().isEmpty()) {
boolean optSuppressExceptions = configuration.containsOption(Option.SUPPRESS_EXCEPTIONS);
if (optSuppressExceptions) {
@ -273,7 +253,7 @@ public class JsonPath {
public <T> T delete(Object jsonObject, Configuration configuration) {
notNull(jsonObject, "json can not be null");
notNull(configuration, "configuration can not be null");
EvaluationContext evaluationContext = path.evaluate(jsonObject, jsonObject, configuration, true);
EvaluationContext evaluationContext = evaluate(jsonObject, jsonObject, configuration, true);
if (evaluationContext.getPathList().isEmpty()) {
boolean optSuppressExceptions = configuration.containsOption(Option.SUPPRESS_EXCEPTIONS);
if (optSuppressExceptions) {
@ -300,7 +280,7 @@ public class JsonPath {
public <T> T add(Object jsonObject, Object value, Configuration configuration) {
notNull(jsonObject, "json can not be null");
notNull(configuration, "configuration can not be null");
EvaluationContext evaluationContext = path.evaluate(jsonObject, jsonObject, configuration, true);
EvaluationContext evaluationContext = evaluate(jsonObject, jsonObject, configuration, true);
if (evaluationContext.getPathList().isEmpty()) {
boolean optSuppressExceptions = configuration.containsOption(Option.SUPPRESS_EXCEPTIONS);
if (optSuppressExceptions) {
@ -329,7 +309,7 @@ public class JsonPath {
notNull(jsonObject, "json can not be null");
notEmpty(key, "key can not be null or empty");
notNull(configuration, "configuration can not be null");
EvaluationContext evaluationContext = path.evaluate(jsonObject, jsonObject, configuration, true);
EvaluationContext evaluationContext = evaluate(jsonObject, jsonObject, configuration, true);
if (evaluationContext.getPathList().isEmpty()) {
boolean optSuppressExceptions = configuration.containsOption(Option.SUPPRESS_EXCEPTIONS);
if (optSuppressExceptions) {
@ -348,7 +328,7 @@ public class JsonPath {
notNull(jsonObject, "json can not be null");
notEmpty(newKeyName, "newKeyName can not be null or empty");
notNull(configuration, "configuration can not be null");
EvaluationContext evaluationContext = path.evaluate(jsonObject, jsonObject, configuration, true);
EvaluationContext evaluationContext = evaluate(jsonObject, jsonObject, configuration, true);
for (PathRef updateOperation : evaluationContext.updateOperations()) {
boolean optSuppressExceptions = configuration.containsOption(Option.SUPPRESS_EXCEPTIONS);
try {
@ -554,17 +534,17 @@ public class JsonPath {
/**
* Creates a new JsonPath and applies it to the provided Json object
*
* @param jsonURL url pointing to json doc
// * @param jsonURL url pointing to json doc
* @param jsonPath the json path
* @param filters filters to be applied to the filter place holders [?] in the path
* @param <T> expected return type
* @return list of objects matched by the given path
*/
@SuppressWarnings({"unchecked"})
// @SuppressWarnings({"unchecked"})
@Deprecated
public static <T> T read(URL jsonURL, String jsonPath, Predicate... filters) throws IOException {
return new ParseContextImpl().parse(jsonURL).read(jsonPath, filters);
}
// public static <T> T read(URL jsonURL, String jsonPath, Predicate... filters) throws IOException {
// return new ParseContextImpl().parse(jsonURL).read(jsonPath, filters);
// }
/**
* Creates a new JsonPath and applies it to the provided Json object

35
json-path/src/main/java/com/jayway/jsonpath/PathEvaluator.java
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@ -0,0 +1,35 @@
package com.jayway.jsonpath.internal;
import com.jayway.jsonpath.Configuration;
import static com.jayway.jsonpath.internal.Utils.*;
import static com.jayway.jsonpath.Option.AS_PATH_LIST;
public class PathEvaluator {
private final Path path;
private final Configuration configuration;
public PathEvaluator(Path path, Configuration configuration) {
notNull(path, "path can not be null");
notNull(configuration, "configuration can not be null");
this.path = path;
this.configuration = configuration;
}
public <T> T evaluate(Object jsonObject) {
boolean optAsPathList = configuration.containsOption(AS_PATH_LIST);
EvaluationContext evaluationContext = path.evaluate(jsonObject, jsonObject, configuration);
return resultByConfiguration(jsonObject, evaluationContext);
}
private <T> T resultByConfiguration(Object jsonObject, EvaluationContext evaluationContext) {
if(configuration.containsOption(AS_PATH_LIST)){
return (T)evaluationContext.getPathList();
} else {
return (T) jsonObject;
}
}
}

4
json-path/src/main/java/com/jayway/jsonpath/internal/Path.java
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@ -30,7 +30,7 @@ public interface Path {
* @param configuration configuration to use
* @return EvaluationContext containing results of evaluation
*/
EvaluationContext evaluate(Object document, Object rootDocument, Configuration configuration);
// EvaluationContext evaluate(Object document, Object rootDocument, Configuration configuration);
/**
* Evaluates this path
@ -41,7 +41,7 @@ public interface Path {
* @param forUpdate is this a read or a write operation
* @return EvaluationContext containing results of evaluation
*/
EvaluationContext evaluate(Object document, Object rootDocument, Configuration configuration, boolean forUpdate);
// EvaluationContext evaluate(Object document, Object rootDocument, Configuration configuration, boolean forUpdate);
/**
*

32
json-path/src/main/java/com/jayway/jsonpath/spi/json/JacksonJsonNodeJsonProvider.java
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@ -212,18 +212,42 @@ public class JacksonJsonNodeJsonProvider extends AbstractJsonProvider {
@Override
public int length(Object obj) {
JsonLengthCalculator lengthCalculator = getLengthCalculator(obj);
return lengthCalculator.calculateLength(obj);
}
private JsonLengthCalculator getLengthCalculator(Object obj) {
if (isArray(obj)) {
return toJsonArray(obj).size();
return new JsonArrayLengthCalculator();
} else if (isMap(obj)) {
return toJsonObject(obj).size();
return new JsonObjectLengthCalculator();
} else {
return new TextNodeLengthCalculator();
}
}
public class JsonArrayLengthCalculator implements JsonLengthCalculator {
@Override
public int calculateLength(Object obj) {
return toJsonArray(obj).size();
}
}
public class JsonObjectLengthCalculator implements JsonLengthCalculator {
@Override
public int calculateLength(Object obj) {
return toJsonObject(obj).size();
}
}
public class TextNodeLengthCalculator implements JsonLengthCalculator {
@Override
public int calculateLength(Object obj) {
if (obj instanceof TextNode) {
TextNode element = (TextNode) obj;
return element.size();
}
throw new JsonPathException("length operation cannot be applied to " + (obj != null ? obj.getClass().getName() : "null"));
}
throw new JsonPathException("length operation can not applied to " + (obj != null ? obj.getClass().getName()
: "null"));
}
@Override

5
json-path/src/main/java/com/jayway/jsonpath/spi/json/JsonLengthCalculator.java
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@ -0,0 +1,5 @@
package com.jayway.jsonpath.spi.json;
public interface JsonLengthCalculator {
int calculateLength(Object obj);
}
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