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Diffstat (limited to 'branches/sca-java-1.x/modules/binding-ws-axis2-jms/src/main/java/org/apache/tuscany/sca/binding/ws/axis2/format/TextFromElementReader.java')
| -rw-r--r-- | branches/sca-java-1.x/modules/binding-ws-axis2-jms/src/main/java/org/apache/tuscany/sca/binding/ws/axis2/format/TextFromElementReader.java | 160 |
1 files changed, 0 insertions, 160 deletions
diff --git a/branches/sca-java-1.x/modules/binding-ws-axis2-jms/src/main/java/org/apache/tuscany/sca/binding/ws/axis2/format/TextFromElementReader.java b/branches/sca-java-1.x/modules/binding-ws-axis2-jms/src/main/java/org/apache/tuscany/sca/binding/ws/axis2/format/TextFromElementReader.java deleted file mode 100644 index e4f0931bfc..0000000000 --- a/branches/sca-java-1.x/modules/binding-ws-axis2-jms/src/main/java/org/apache/tuscany/sca/binding/ws/axis2/format/TextFromElementReader.java +++ /dev/null @@ -1,160 +0,0 @@ -/* - * 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.tuscany.sca.binding.ws.axis2.format; - -import java.io.IOException; -import java.io.Reader; - -import javax.xml.stream.XMLStreamException; -import javax.xml.stream.XMLStreamReader; - -import org.apache.axiom.om.OMException; - -/** - * {@link Reader} implementation that extracts the text nodes from an element given by an - * {@link XMLStreamReader}. The expected input is a document with only a document - * element (as produced by {@link org.apache.axiom.om.OMElement.OMElement#getXMLStreamReader()}). - * The class will extract the text nodes that are direct children of that element, i.e. it uses - * the same conventions as {@link org.apache.axiom.om.OMElement.OMElement#getText()}. - * It will call {@link XMLStreamReader#close()} when the end of the document is reached or when - * {@link #close()} is called. - * <p> - * The main purpose of this class is to provide a convenient and efficient way to get the text - * content of an element without converting it first to a string, i.e. without using - * {@link org.apache.axiom.om.OMElement.OMElement#getText()}. This is important for potentially - * large contents, for which this class guarantees constant memory usage. - * <p> - * Note that this class should in general not be used directly. Instead, - * {@link ElementHelper#getTextAsStream(org.apache.axiom.om.OMElement)} - * should be called to get the most efficient stream implementation for a given an element. - * <p> - * NOTICE: The code in this class will be moved to Axiom (or somewhere else). Use with care! - */ -public class TextFromElementReader extends Reader { - private final XMLStreamReader stream; - - /** - * Flag indicating that we have reached the end of the document and that the underlying - * parser has been closed. - */ - private boolean endOfStream; - - /** - * The current depth relative to the document element (not the document). A value greater than - * 0 indicates that we are inside a nested element and that we need to skip text nodes. - */ - private int skipDepth; - - /** - * The current position in the character data of the event, or -1 if all the character data - * has been consumed and a new event needs to be requested from the parser. - */ - private int sourceStart = -1; - - /** - * Constructor. - * - * @param stream the stream to extract the text nodes from - * @throws OMException if the stream doesn't start with the expected events - */ - public TextFromElementReader(XMLStreamReader stream) { - this.stream = stream; - try { - if (stream.getEventType() != XMLStreamReader.START_DOCUMENT) { - throw new OMException("Expected START_DOCUMENT as first event from parser"); - } - if (stream.next() != XMLStreamReader.START_ELEMENT) { - throw new OMException("Expected START_ELEMENT event"); - } - } catch (XMLStreamException ex) { - throw new OMException(ex); - } - } - - @Override - public int read(char[] cbuf, int off, int len) throws IOException { - if (endOfStream) { - return -1; - } - int read = 0; - try { - while (true) { - if (sourceStart == -1) { - eventLoop: while (true) { - int type = stream.next(); - switch (type) { - case XMLStreamReader.CHARACTERS: - case XMLStreamReader.CDATA: - if (skipDepth == 0) { - sourceStart = 0; - break eventLoop; - } - break; - case XMLStreamReader.START_ELEMENT: - skipDepth++; - break; - case XMLStreamReader.END_ELEMENT: - if (skipDepth == 0) { - if (stream.next() == XMLStreamReader.END_DOCUMENT) { - endOfStream = true; - stream.close(); - return read == 0 ? -1 : read; - } else { - throw new IOException( - "End of document expected after element"); - } - } else { - skipDepth--; - } - } - } - } - int c = stream.getTextCharacters(sourceStart, cbuf, off, len); - sourceStart += c; - off += c; - len -= c; - read += c; - if (len > 0) { - sourceStart = -1; - } else { - return read; - } - } - } catch (XMLStreamException ex) { - IOException ex2 = new IOException("Got an exception from the underlying parser " + - "while reading the content of an element"); - ex2.initCause(ex); - throw ex2; - } - } - - @Override - public void close() throws IOException { - if (!endOfStream) { - try { - stream.close(); - } catch (XMLStreamException ex) { - IOException ex2 = new IOException("Error when trying to close underlying parser"); - ex2.initCause(ex); - throw ex2; - } - } - } -} |