Merge pull request #404 from iherasymenko/issue403-caching

#403: Enable path caching within all the operations

json-path/src/main/java/com/jayway/jsonpath/internal/JsonContext.java

@@ -25,6 +25,7 @@ import com.jayway.jsonpath.ReadContext;
 import com.jayway.jsonpath.TypeRef;
 import com.jayway.jsonpath.spi.cache.Cache;
 import com.jayway.jsonpath.spi.cache.CacheProvider;
+
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -74,21 +75,7 @@ public class JsonContext implements DocumentContext {
     @Override
     public <T> T read(String path, Predicate... filters) {
         notEmpty(path, "path can not be null or empty");
-        Cache cache = CacheProvider.getCache();
-
-        path = path.trim();
-        LinkedList filterStack = new LinkedList<Predicate>(asList(filters));
-        String cacheKey = Utils.concat(path, filterStack.toString());
-
-        JsonPath jsonPath = cache.get(cacheKey);
-        if(jsonPath != null){
-        	return read(jsonPath);
-        } else {
-		jsonPath = compile(path, filters);
-		cache.put(cacheKey, jsonPath);
-        	return read(jsonPath);
-        }
-
+        return read(pathFromCache(path, filters));
     }
 
     @Override
@@ -117,15 +104,16 @@ public class JsonContext implements DocumentContext {
         return convert(read(path), type, configuration);
     }
 
+    @Override
     public ReadContext limit(int maxResults) {
         return withListeners(new LimitingEvaluationListener(maxResults));
     }
 
+    @Override
     public ReadContext withListeners(EvaluationListener... listener) {
         return new JsonContext(json, configuration.setEvaluationListeners(listener));
     }
 
-
     private <T> T convert(Object obj, Class<T> targetType, Configuration configuration) {
         return configuration.mappingProvider().map(obj, targetType, configuration);
     }
@@ -136,7 +124,7 @@ public class JsonContext implements DocumentContext {
 
     @Override
     public DocumentContext set(String path, Object newValue, Predicate... filters) {
-        return set(compile(path, filters), newValue);
+        return set(pathFromCache(path, filters), newValue);
     }
 
     @Override
@@ -152,7 +140,7 @@ public class JsonContext implements DocumentContext {
 
     @Override
     public DocumentContext map(String path, MapFunction mapFunction, Predicate... filters) {
-        map(compile(path, filters), mapFunction);
+        map(pathFromCache(path, filters), mapFunction);
         return this;
     }
 
@@ -164,7 +152,7 @@ public class JsonContext implements DocumentContext {
 
     @Override
     public DocumentContext delete(String path, Predicate... filters) {
-        return delete(compile(path, filters));
+        return delete(pathFromCache(path, filters));
     }
 
     @Override
@@ -172,7 +160,7 @@ public class JsonContext implements DocumentContext {
         List<String> modified = path.delete(json, configuration.addOptions(Option.AS_PATH_LIST));
         if (logger.isDebugEnabled()) {
             for (String p : modified) {
-                logger.debug("Delete path {}");
+                logger.debug("Delete path {}", p);
             }
         }
         return this;
@@ -180,7 +168,7 @@ public class JsonContext implements DocumentContext {
 
     @Override
     public DocumentContext add(String path, Object value, Predicate... filters) {
-        return add(compile(path, filters), value);
+        return add(pathFromCache(path, filters), value);
     }
 
     @Override
@@ -196,12 +184,12 @@ public class JsonContext implements DocumentContext {
 
     @Override
     public DocumentContext put(String path, String key, Object value, Predicate... filters) {
-        return put(compile(path, filters), key, value);
+        return put(pathFromCache(path, filters), key, value);
     }
 
     @Override
     public DocumentContext renameKey(String path, String oldKeyName, String newKeyName, Predicate... filters) {
-        return renameKey(compile(path, filters), oldKeyName, newKeyName);
+        return renameKey(pathFromCache(path, filters), oldKeyName, newKeyName);
     }
 
     @Override
@@ -215,7 +203,6 @@ public class JsonContext implements DocumentContext {
         return this;
     }
 
-
     @Override
     public DocumentContext put(JsonPath path, String key, Object value) {
         List<String> modified = path.put(json, key, value, configuration.addOptions(Option.AS_PATH_LIST));
@@ -227,6 +214,17 @@ public class JsonContext implements DocumentContext {
         return this;
     }
 
+    private JsonPath pathFromCache(String path, Predicate[] filters) {
+        Cache cache = CacheProvider.getCache();
+        String cacheKey = Utils.concat(path, new LinkedList<Predicate>(asList(filters)).toString());
+        JsonPath jsonPath = cache.get(cacheKey);
+        if (jsonPath == null) {
+            jsonPath = compile(path, filters);
+            cache.put(cacheKey, jsonPath);
+        }
+        return jsonPath;
+    }
+
     private final static class LimitingEvaluationListener implements EvaluationListener {
         final int limit;
 
@@ -243,4 +241,5 @@ public class JsonContext implements DocumentContext {
             }
         }
     }
+
 }