biz.c24.io.spring.integration.transformer.C24XPathTransformer.java Source code

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Here is the source code for biz.c24.io.spring.integration.transformer.C24XPathTransformer.java

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/*
 * 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 biz.c24.io.spring.integration.transformer;

import org.springframework.integration.transformer.AbstractPayloadTransformer;
import org.springframework.util.Assert;

import biz.c24.io.api.data.ComplexDataObject;
import biz.c24.io.api.data.IOXPath;
import biz.c24.io.api.data.IOXPathException;
import biz.c24.io.api.data.IOXPathFactory;
import biz.c24.io.api.data.XPathStatement;
import biz.c24.io.spring.integration.xpath.XPathEvaluationType;

/**
 * @author askogman
 * 
 */
public class C24XPathTransformer extends AbstractPayloadTransformer<ComplexDataObject, Object> {

    volatile XPathStatement statement;
    volatile XPathEvaluationType evaluationType = XPathEvaluationType.OBJECT_RESULT;

    public C24XPathTransformer(String statement) {
        Assert.notNull(statement, "The XPath statement must not be null.");

        this.statement = new XPathStatement(statement);
    }

    public C24XPathTransformer(XPathStatement statement) {
        Assert.notNull(statement, "The XPath statement must not be null.");

        this.statement = statement;
    }

    @Override
    protected Object transformPayload(ComplexDataObject payload) throws Exception {

        IOXPath xpath = createXPath();

        Object transformedPayload = evaluationType.evaluateXPath(xpath, payload);
        return transformedPayload;
    }

    protected IOXPath createXPath() throws IOXPathException {
        return IOXPathFactory.getInstance(statement);
    }

    public XPathStatement getStatement() {
        return statement;
    }

    public void setStatement(XPathStatement statement) {
        Assert.notNull(statement, "The XPath statement must not be null.");

        this.statement = statement;
    }

    public XPathEvaluationType getEvaluationType() {
        return evaluationType;
    }

    public void setEvaluationType(XPathEvaluationType evaluationType) {
        Assert.notNull(evaluationType, "The XPath evaluation type must not be null.");
        this.evaluationType = evaluationType;
    }

}