/* 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 org.camunda.spin.impl.json.tree;
import org.camunda.spin.SpinList;
import org.camunda.spin.json.SpinJsonNode;
import org.camunda.spin.json.SpinJsonTreePathQuery;
import org.camunda.spin.logging.SpinLogger;
import com.fasterxml.jackson.databind.JsonNode;
import com.jayway.jsonpath.JsonPath;
import com.jayway.jsonpath.PathNotFoundException;
/**
* @author Stefan Hentschel
*/
public class SpinJsonJacksonPathQuery implements SpinJsonTreePathQuery {
private static final JsonJacksonTreeLogger LOG = SpinLogger.JSON_TREE_LOGGER;
protected final SpinJsonNode spinJsonNode;
protected final JsonPath query;
protected final JsonJacksonTreeDataFormat dataFormat;
public SpinJsonJacksonPathQuery(SpinJsonJacksonTreeNode spinJsonJacksonTreeNode, JsonPath query, JsonJacksonTreeDataFormat dataFormat) {
this.spinJsonNode = spinJsonJacksonTreeNode;
this.query = query;
this.dataFormat = dataFormat;
}
public SpinJsonNode element() {
try {
Object result = query.read(spinJsonNode.toString(), dataFormat.getJsonPathConfiguration());
if (result != null) {
JsonNode node = dataFormat.createJsonNode(result);
return dataFormat.createWrapperInstance(node);
}
else {
throw LOG.unableToFindJsonPath(query.getPath(), spinJsonNode.toString());
}
} catch(PathNotFoundException pex) {
throw LOG.unableToEvaluateJsonPathExpressionOnNode(spinJsonNode, pex);
} catch (ClassCastException cex) {
throw LOG.unableToCastJsonPathResultTo(SpinJsonNode.class, cex);
}
}
public SpinList<SpinJsonNode> elementList() {
SpinJsonJacksonTreeNode node = (SpinJsonJacksonTreeNode) element();
if(node.isArray()) {
return node.elements();
} else {
throw LOG.unableToParseValue(SpinList.class.getSimpleName(), node.getNodeType());
}
}
public String stringValue() {
SpinJsonJacksonTreeNode node = (SpinJsonJacksonTreeNode) element();
if(node.isString()) {
return node.stringValue();
} else {
throw LOG.unableToParseValue(String.class.getSimpleName(), node.getNodeType());
}
}
public Number numberValue() {
SpinJsonJacksonTreeNode node = (SpinJsonJacksonTreeNode) element();
if(node.isNumber()) {
return node.numberValue();
} else {
throw LOG.unableToParseValue(Number.class.getSimpleName(), node.getNodeType());
}
}
public Boolean boolValue() {
SpinJsonJacksonTreeNode node = (SpinJsonJacksonTreeNode) element();
if(node.isBoolean()) {
return node.boolValue();
} else {
throw LOG.unableToParseValue(Boolean.class.getSimpleName(), node.getNodeType());
}
}
}