org.modelmapper.jackson.JsonNodeValueReader.java Source code

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Here is the source code for org.modelmapper.jackson.JsonNodeValueReader.java

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/*
 * Copyright 2013 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 org.modelmapper.jackson;

import java.io.IOException;
import java.util.Collection;

import org.modelmapper.internal.util.Lists;
import org.modelmapper.spi.ValueReader;

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.node.NumericNode;
import com.fasterxml.jackson.databind.node.ObjectNode;
import com.fasterxml.jackson.databind.node.POJONode;

/**
 * JsonNode ValueReader implementation.
 * 
 * @author Jonathan Halterman
 */
public class JsonNodeValueReader implements ValueReader<JsonNode> {
    public Object get(JsonNode source, String memberName) {
        JsonNode propertyNode = source.get(memberName);
        if (propertyNode == null)
            throw new IllegalArgumentException();

        switch (propertyNode.getNodeType()) {
        case BOOLEAN:
            return propertyNode.asBoolean();
        case NULL:
            return null;
        case NUMBER:
            return ((NumericNode) propertyNode).numberValue();
        case POJO:
            return ((POJONode) propertyNode).getPojo();
        case STRING:
            return propertyNode.asText();
        case BINARY:
            try {
                return propertyNode.binaryValue();
            } catch (IOException ignore) {
                return null;
            }

        case ARRAY:
        case OBJECT:
        case MISSING:
        default:
            return propertyNode;
        }
    }

    public Collection<String> memberNames(JsonNode source) {
        if (source.isObject())
            return Lists.from(((ObjectNode) source).fieldNames());
        return null;
    }

    @Override
    public String toString() {
        return "Jackson";
    }
}