/*
* 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.spi.impl;
import com.jayway.jsonpath.InvalidJsonException;
import com.jayway.jsonpath.spi.MappingProvider;
import com.jayway.jsonpath.spi.Mode;
import org.codehaus.jackson.JsonGenerator;
import org.codehaus.jackson.map.ObjectMapper;
import org.codehaus.jackson.map.type.CollectionType;
import java.io.IOException;
import java.io.InputStream;
import java.io.Reader;
import java.io.StringWriter;
import java.util.*;
/**
* @author Kalle Stenflo
*/
public class JacksonProvider extends AbstractJsonProvider implements MappingProvider{
private ObjectMapper objectMapper = new ObjectMapper();
@Override
public Mode getMode() {
return Mode.STRICT;
}
@Override
public Object parse(String json) throws InvalidJsonException {
try {
return objectMapper.readValue(json, Object.class);
} catch (IOException e) {
throw new InvalidJsonException(e);
}
}
@Override
public Object parse(Reader jsonReader) throws InvalidJsonException {
try {
return objectMapper.readValue(jsonReader, Object.class);
} catch (IOException e) {
throw new InvalidJsonException(e);
}
}
@Override
public Object parse(InputStream jsonStream) throws InvalidJsonException {
try {
return objectMapper.readValue(jsonStream, Object.class);
} catch (IOException e) {
throw new InvalidJsonException(e);
}
}
@Override
public String toJson(Object obj) {
StringWriter writer = new StringWriter();
try {
JsonGenerator jsonGenerator = objectMapper.getJsonFactory().createJsonGenerator(writer);
objectMapper.writeValue(jsonGenerator, obj);
writer.close();
return writer.getBuffer().toString();
} catch (IOException e) {
throw new InvalidJsonException();
}
}
@Override
public Map<String, Object> createMap() {
return new HashMap<String, Object>();
}
@Override
public List<Object> createArray() {
return new LinkedList<Object>();
}
//-------------------------------------------------------------------
//
// Mapping provider
//
//-------------------------------------------------------------------
@Override
public <T> T convertValue(Object fromValue, Class<T> toValueType) throws IllegalArgumentException {
return objectMapper.convertValue(fromValue, toValueType);
}
@Override
@SuppressWarnings({"unchecked"})
public <T extends Collection<E>, E> T convertValue(Object fromValue, Class<T> collectionType, Class<E> elementType) throws IllegalArgumentException {
CollectionType colType = objectMapper.getTypeFactory().constructCollectionType(collectionType, elementType);
return (T)objectMapper.convertValue(fromValue, colType);
}
}