XMLOutputASK.java example

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/*
 * 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.jena.sparql.resultset;

import java.io.OutputStream;

import org.apache.jena.atlas.io.IndentedWriter;

/** XML Output (ASK format) */

public class XMLOutputASK implements XMLResults {
    String         stylesheetURL = null;
    IndentedWriter out;
    int            bNodeCounter  = 0;
    boolean        xmlInst       = true;

    public XMLOutputASK(OutputStream outStream) {
        this(outStream, null);
    }

    public XMLOutputASK(OutputStream outStream, String stylesheetURL) {
        this(new IndentedWriter(outStream), stylesheetURL);
    }

    public XMLOutputASK(IndentedWriter indentedOut, String stylesheetURL) {
        out = indentedOut;
        this.stylesheetURL = stylesheetURL;
    }

    public void exec(boolean result) {
        if ( xmlInst )
            out.println("<?xml version=\"1.0\"?>");

        if ( stylesheetURL != null )
            out.println("<?xml-stylesheet type=\"text/xsl\" href=\"" + stylesheetURL + "\"?>");

        out.println("<" + dfRootTag + " xmlns=\"" + dfNamespace + "\">");
        out.incIndent(INDENT);

        // Head
        out.println("<" + dfHead + ">");
        out.incIndent(INDENT);
        if ( false ) {
            String link = "UNSET";
            out.println("<link href=\"" + link + "\"/>");
        }
        out.decIndent(INDENT);
        out.println("</" + dfHead + ">");

        if ( result )
            out.println("<boolean>true</boolean>");
        else
            out.println("<boolean>false</boolean>");
        out.decIndent(INDENT);
        out.println("</" + dfRootTag + ">");
        out.flush();
    }
}