src/main/java/org/apache/maven/plugins/ear/ResourceRef.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.apache.maven.plugins.ear;

import org.codehaus.plexus.util.xml.XMLWriter;

/**
 * Representation of {@code resource-ref} element in {@code application.xml} file.
 *
 * <pre>
 * &lt;resource-ref&gt;
 *   &lt;res-ref-name&gt;jdbc/myDs&lt;/res-ref-name&gt;
 *   &lt;res-type&gt;javax.sql.DataSource&lt;/res-type&gt;
 *   &lt;res-auth&gt;Container&lt;/res-auth&gt;
 * &lt;/resource-ref&gt;
 * </pre>
 * or
 * <pre>
 * &lt;resource-ref&gt;
 *   &lt;res-ref-name&gt;jdbc/myDs&lt;/res-ref-name&gt;
 *   &lt;res-type&gt;javax.sql.DataSource&lt;/res-type&gt;
 *   &lt;lookup-name&gt;jdbc/lookup/myDs&lt;/lookup-name&gt;
 * &lt;/resource-ref&gt;
 * </pre>
 *
 * @author Karl Heinz Marbaise
 * @since 3.0.0
 */
public class ResourceRef {
    static final String RESOURCE_REF = "resource-ref";

    static final String RESOURCE_REF_NAME = "res-ref-name";

    static final String RESOURCE_TYPE = "res-type";

    static final String RESOURCE_AUTH = "res-auth";

    static final String LOOKUP_NAME = "lookup-name";

    private String name;

    private String type;

    private String auth;

    private String lookupName;

    /**
     * @param name the res-ref-name
     * @param type the res-type
     * @param auth the res-auth
     * @param lookupName the lookup-name
     */
    public ResourceRef(String name, String type, String auth, String lookupName) {
        if (name == null || name.isEmpty()) {
            throw new IllegalArgumentException(
                    RESOURCE_REF_NAME + " in " + RESOURCE_REF_NAME + " element cannot be null.");
        } else if ((type == null || type.isEmpty()) && (auth == null || auth.isEmpty())) {
            throw new IllegalArgumentException(RESOURCE_TYPE + " in " + RESOURCE_REF_NAME + " element cannot be null ");
        }

        this.name = name;
        this.type = type;
        this.auth = auth;
        this.lookupName = lookupName;
    }

    /**
     * Appends the {@code XML} representation of this env-entry.
     *
     * @param writer the writer to use
     */
    public void appendResourceRefEntry(XMLWriter writer) {
        writer.startElement(RESOURCE_REF);

        // res-name
        doWriteElement(writer, RESOURCE_REF_NAME, getName());

        // res_ref-type
        if (getType() != null) {
            doWriteElement(writer, RESOURCE_TYPE, getType());
        }

        // ref-auth
        if (getAuth() != null) {
            doWriteElement(writer, RESOURCE_AUTH, getAuth());
        }

        // lookup-name
        if (getLookupName() != null) {
            doWriteElement(writer, LOOKUP_NAME, getLookupName());
        }

        // end of ejb-ref
        writer.endElement();
    }

    private void doWriteElement(XMLWriter writer, String element, String text) {
        writer.startElement(element);
        writer.writeText(text);
        writer.endElement();
    }

    /**
     * @return {@link #name}
     */
    public String getName() {
        return name;
    }

    /**
     * @param name {@link #name}
     */
    public void setName(String name) {
        this.name = name;
    }

    /**
     * @return {@link #type}
     */
    public String getType() {
        return type;
    }

    /**
     * @param type {@link #type}
     */
    public void setType(String type) {
        this.type = type;
    }

    /**
     * @return {@link #auth}
     */
    public String getAuth() {
        return auth;
    }

    /**
     * @param auth {@link #auth}
     */
    public void setAuth(String auth) {
        this.auth = auth;
    }

    /**
     * @return {@link #lookupName}
     */
    public String getLookupName() {
        return lookupName;
    }

    /**
     * @param lookupName {@link #lookupName}
     */
    public void setLookupName(String lookupName) {
        this.lookupName = lookupName;
    }
}