trace/traceviewer/com.nokia.trace.dictionary/src/com/nokia/trace/dictionary/model/DictionaryContentHandler.java
changeset 11 5b9d4d8641ce
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/trace/traceviewer/com.nokia.trace.dictionary/src/com/nokia/trace/dictionary/model/DictionaryContentHandler.java	Wed Jun 23 14:49:59 2010 +0300
@@ -0,0 +1,310 @@
+/*
+ * Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies). 
+ * All rights reserved.
+ * This component and the accompanying materials are made available
+ * under the terms of "Eclipse Public License v1.0"
+ * which accompanies this distribution, and is available
+ * at the URL "http://www.eclipse.org/legal/epl-v10.html".
+ *
+ * Initial Contributors:
+ * Nokia Corporation - initial contribution.
+ *
+ * Contributors:
+ *
+ * Description:
+ *
+ * Dictionary Content Handler
+ *
+ */
+package com.nokia.trace.dictionary.model;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Comparator;
+
+import org.xml.sax.Attributes;
+import org.xml.sax.ContentHandler;
+import org.xml.sax.Locator;
+import org.xml.sax.SAXException;
+
+import com.nokia.trace.dictionary.model.DictionaryContentVariables.ParentDecodeObject;
+import com.nokia.trace.dictionary.model.handlers.DictionaryHandler;
+import com.nokia.trace.dictionary.model.handlers.DictionaryHandlerCreator;
+
+/**
+ * Dictionary Content Handler
+ * 
+ */
+public class DictionaryContentHandler implements ContentHandler {
+
+	/**
+	 * Tag for metadata
+	 */
+	private static final String METADATA_TAG = "options"; //$NON-NLS-1$
+
+	/**
+	 * Decode Model
+	 */
+	private DictionaryDecodeModel model;
+
+	/**
+	 * Handlers for start elements in dictionary file
+	 */
+	private ArrayList<DictionaryHandler> startHandlers;
+
+	/**
+	 * Handlers for end elements in dictionary file
+	 */
+	private ArrayList<DictionaryHandler> endHandlers;
+
+	/**
+	 * Metadata handlers
+	 */
+	private ArrayList<DictionaryHandler> metadataHandlers;
+
+	/**
+	 * Are we catching characters
+	 */
+	private boolean catchCharacters;
+
+	/**
+	 * Buffer where to store characters
+	 */
+	private StringBuffer elementContent;
+
+	/**
+	 * Content variables used to get all needed information when creating model
+	 */
+	private DictionaryContentVariables variables;
+
+	/**
+	 * Unfinished object which will be finished in endElement
+	 */
+	private Object unFinishedObject;
+
+	/**
+	 * Locator object
+	 */
+	private Locator locator;
+
+	/**
+	 * Handler creator
+	 */
+	private DictionaryHandlerCreator handlerCreator;
+
+	/**
+	 * Constructor
+	 * 
+	 * @param model
+	 *            model
+	 * @param handlers
+	 *            list of metadata handlers
+	 */
+	public DictionaryContentHandler(DictionaryDecodeModel model,
+			ArrayList<DictionaryHandler> handlers) {
+		handlerCreator = new DictionaryHandlerCreator(model);
+		this.model = model;
+		this.metadataHandlers = handlers;
+		variables = new DictionaryContentVariables();
+		elementContent = new StringBuffer();
+		startHandlers = handlerCreator.createStartHandlers();
+		endHandlers = handlerCreator.createEndHandlers();
+
+		// Sort metadata handlers
+		handlerCreator.sortHandlers(metadataHandlers);
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see org.xml.sax.ContentHandler#characters(char[], int, int)
+	 */
+	public void characters(char[] ch, int start, int length)
+			throws SAXException {
+		if (catchCharacters) {
+			elementContent.append(new String(ch, start, length));
+		}
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see org.xml.sax.ContentHandler#endDocument()
+	 */
+	public void endDocument() throws SAXException {
+		model.clearAfterModelIsReady();
+		model.setValid(true);
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see org.xml.sax.ContentHandler#endElement(java.lang.String,
+	 * java.lang.String, java.lang.String)
+	 */
+	public void endElement(String uri, String localName, String qName)
+			throws SAXException {
+
+		// If processing metadata, use metadata handlers
+		ArrayList<DictionaryHandler> handlers;
+		if (variables.isInsideMetadataBlock() && !qName.equals(METADATA_TAG)) {
+			handlers = metadataHandlers;
+		} else {
+			handlers = endHandlers;
+		}
+
+		int pos = Collections.binarySearch(handlers, qName,
+				new Comparator<Object>() {
+
+					public int compare(Object o1, Object o2) {
+						int val = ((DictionaryHandler) o1).getName().compareTo(
+								(String) o2);
+						return val > 0 ? 1 : val < 0 ? -1 : 0;
+					}
+				});
+
+		// Handler found, insert the right parent element as a parameter
+		if (pos >= 0) {
+			DecodeObject parentObj = null;
+			if (variables.getParentDecodeObject() == ParentDecodeObject.COMPONENT) {
+				parentObj = variables.getPreviousComponent();
+			} else if (variables.getParentDecodeObject() == ParentDecodeObject.GROUP) {
+				parentObj = variables.getPreviousGroup();
+			} else if (variables.getParentDecodeObject() == ParentDecodeObject.TRACE) {
+				parentObj = variables.getTraceInstanceList();
+			} else if (variables.getParentDecodeObject() == ParentDecodeObject.TRACEINSTANCE) {
+				parentObj = variables.getPreviousTrace();
+			}
+			handlers.get(pos).processEndElement(elementContent,
+					unFinishedObject, this, parentObj);
+		}
+
+		// Don't check any more end elements automatically and don't catch
+		// characters
+		catchCharacters = false;
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see org.xml.sax.ContentHandler#endPrefixMapping(java.lang.String)
+	 */
+	public void endPrefixMapping(String prefix) throws SAXException {
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see org.xml.sax.ContentHandler#ignorableWhitespace(char[], int, int)
+	 */
+	public void ignorableWhitespace(char[] ch, int start, int length)
+			throws SAXException {
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see org.xml.sax.ContentHandler#processingInstruction(java.lang.String,
+	 * java.lang.String)
+	 */
+	public void processingInstruction(String target, String data)
+			throws SAXException {
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see org.xml.sax.ContentHandler#setDocumentLocator(org.xml.sax.Locator)
+	 */
+	public void setDocumentLocator(Locator locator) {
+		this.locator = locator;
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see org.xml.sax.ContentHandler#skippedEntity(java.lang.String)
+	 */
+	public void skippedEntity(String name) throws SAXException {
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see org.xml.sax.ContentHandler#startDocument()
+	 */
+	public void startDocument() throws SAXException {
+		model.setValid(false);
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see org.xml.sax.ContentHandler#startElement(java.lang.String,
+	 * java.lang.String, java.lang.String, org.xml.sax.Attributes)
+	 */
+	public void startElement(String uri, String localName, String qName,
+			Attributes atts) throws SAXException {
+
+		// If processing metadata, use metadata handlers
+		ArrayList<DictionaryHandler> handlers;
+		if (variables.isInsideMetadataBlock()) {
+			handlers = metadataHandlers;
+		} else {
+			handlers = startHandlers;
+		}
+
+		int pos = Collections.binarySearch(handlers, qName,
+				new Comparator<Object>() {
+
+					public int compare(Object o1, Object o2) {
+						int val = ((DictionaryHandler) o1).getName().compareTo(
+								(String) o2);
+						return val > 0 ? 1 : val < 0 ? -1 : 0;
+					}
+				});
+		if (pos >= 0) {
+			handlers.get(pos).processStartElement(atts, this);
+		}
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see org.xml.sax.ContentHandler#startPrefixMapping(java.lang.String,
+	 * java.lang.String)
+	 */
+	public void startPrefixMapping(String prefix, String uri)
+			throws SAXException {
+	}
+
+	/**
+	 * Tells this handler to catch element contents
+	 * 
+	 * @param object
+	 *            unfinished object
+	 */
+	public void catchElementContents(Object object) {
+		unFinishedObject = object;
+		catchCharacters = true;
+		elementContent.setLength(0);
+	}
+
+	/**
+	 * Gets variables
+	 * 
+	 * @return the variables
+	 */
+	public DictionaryContentVariables getVariables() {
+		return variables;
+	}
+
+	/**
+	 * Gets locator
+	 * 
+	 * @return locator
+	 */
+	public Locator getLocator() {
+		return locator;
+	}
+}