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/*   Copyright 2004 The Apache Software Foundation
 *
 *   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.apache.xmlbeans.impl.jam.xml;

import org.apache.xmlbeans.impl.jam.JAnnotatedElement;
import org.apache.xmlbeans.impl.jam.JAnnotation;
import org.apache.xmlbeans.impl.jam.JAnnotationValue;
import org.apache.xmlbeans.impl.jam.JClass;
import org.apache.xmlbeans.impl.jam.JComment;
import org.apache.xmlbeans.impl.jam.JConstructor;
import org.apache.xmlbeans.impl.jam.JField;
import org.apache.xmlbeans.impl.jam.JInvokable;
import org.apache.xmlbeans.impl.jam.JMethod;
import org.apache.xmlbeans.impl.jam.JParameter;
import org.apache.xmlbeans.impl.jam.JSourcePosition;

import javax.xml.stream.XMLOutputFactory;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamWriter;
import java.io.Writer;

/**
 * @author Patrick Calahan <email: pcal-at-bea-dot-com>
 */
/*package*/ class JamXmlWriter implements JamXmlElements {

  // ========================================================================
  // Variables

  private XMLStreamWriter mOut;
  private boolean mInBody = false;
  private boolean mWriteSourceURI = false;

  // ========================================================================
  // Constructors

  public JamXmlWriter(Writer out) throws XMLStreamException  {
    if (out == null) throw new IllegalArgumentException("null out");
    mOut = XMLOutputFactory.newInstance().createXMLStreamWriter(out);
  }

  public JamXmlWriter(XMLStreamWriter out) {
    if (out == null) throw new IllegalArgumentException("null out");
    mOut = out;
  }

  // ========================================================================
  // Public methods


  public void begin() throws XMLStreamException {
    if (mInBody) throw new XMLStreamException("begin() already called");
    mOut.writeStartElement(JAMSERVICE);
    mInBody = true;
  }

  public void end() throws XMLStreamException {
    if (!mInBody) throw new XMLStreamException("begin() never called");
    mOut.writeEndElement();
    mInBody = false;
  }


  /*
  public void write(JPackage pkg) throws XMLStreamException {
    assertStarted();
    mOut.writeStartElement(PACKAGE);
    JClass[] c = pkg.getClasses();
    for(int i=0; i 0) {
          mOut.writeStartElement(COMMENT);
          mOut.writeCData(jc.getText());
          mOut.writeEndElement();
        }
      }
    }
    JSourcePosition pos = ae.getSourcePosition();
    if (pos != null) {
      mOut.writeStartElement(SOURCEPOSITION);
      if (pos.getLine() != -1) {
        writeValueElement(LINE,pos.getLine());
      }
      if (pos.getColumn() != -1) {
        writeValueElement(COLUMN,pos.getColumn());
      }
      if (mWriteSourceURI && pos.getSourceURI() != null)
        writeValueElement(SOURCEURI,pos.getSourceURI().toString());
      mOut.writeEndElement();
    }
  }

  private void writeAnnotation(JAnnotation ann) throws XMLStreamException {
    mOut.writeStartElement(ANNOTATION);
    writeValueElement(NAME,ann.getQualifiedName());
    JAnnotationValue[] values = ann.getValues();
    for(int i=0; i