Examples of org.apache.commons.collections.ArrayStack

org.apache.commons.collections.ArrayStack
An implementation of the {@link java.util.Stack} API that is based on anArrayList instead of a Vector, so it is not synchronized to protect against multi-threaded access. The implementation is therefore operates faster in environments where you do not need to worry about multiple thread contention. @author Craig R. McClanahan @version $Revision: 1.3 $ $Date: 2001/05/04 16:33:18 $ @see java.util.Stack

     *
     * @exception SAXException if a parsing error is to be reported
     */
    public void endPrefixMapping(String prefix) throws SAXException {
        // Deregister this prefix mapping
        ArrayStack stack = (ArrayStack) namespaces.get(prefix);
        if (stack == null) {
            return;
        }
        try {
            stack.pop();
            if (stack.empty()) {
                namespaces.remove(prefix);
            }
        }
        catch (EmptyStackException e) {
            throw createSAXException("endPrefixMapping popped too many times");

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        throws Exception
    {
        this.db = db;
        currentParentId = parentId;
        currentCursor = cursor;
        cursorStack = new ArrayStack();
        parentIdStack = new ArrayStack();
        this.baseId = baseId;
        this.topLevel = topLevel;


        if ( IS_DEBUG )
        {

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    boolean inElement = false;
    boolean prologWritten = false;
    
    public XmlWriter(final Writer writer) {
        this.writer = writer;
        this.elementNames = new ArrayStack();
    }

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     *
     * @param prefix Prefix to look up
     */
    public String findNamespaceURI(String prefix) {
        
        ArrayStack stack = (ArrayStack) namespaces.get(prefix);
        if (stack == null) {
            return (null);
        }
        try {
            return ((String) stack.peek());
        } catch (EmptyStackException e) {
            return (null);
        }


    }

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        if (saxLog.isDebugEnabled()) {
            saxLog.debug("endPrefixMapping(" + prefix + ")");
        }


        // Deregister this prefix mapping
        ArrayStack stack = (ArrayStack) namespaces.get(prefix);
        if (stack == null) {
            return;
        }
        try {
            stack.pop();
            if (stack.empty())
                namespaces.remove(prefix);
        } catch (EmptyStackException e) {
            throw createSAXException("endPrefixMapping popped too many times");
        }

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        if (saxLog.isDebugEnabled()) {
            saxLog.debug("startPrefixMapping(" + prefix + "," + namespaceURI + ")");
        }


        // Register this prefix mapping
        ArrayStack stack = (ArrayStack) namespaces.get(prefix);
        if (stack == null) {
            stack = new ArrayStack();
            namespaces.put(prefix, stack);
        }
        stack.push(namespaceURI);


    }

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     *
     * @param prefix Prefix to look up
     */
    public String findNamespaceURI(String prefix) {
        
        ArrayStack stack = (ArrayStack) namespaces.get(prefix);
        if (stack == null) {
            return (null);
        }
        try {
            return ((String) stack.peek());
        } catch (EmptyStackException e) {
            return (null);
        }


    }

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        if (saxLog.isDebugEnabled()) {
            saxLog.debug("endPrefixMapping(" + prefix + ")");
        }


        // Deregister this prefix mapping
        ArrayStack stack = (ArrayStack) namespaces.get(prefix);
        if (stack == null) {
            return;
        }
        try {
            stack.pop();
            if (stack.empty())
                namespaces.remove(prefix);
        } catch (EmptyStackException e) {
            throw createSAXException("endPrefixMapping popped too many times");
        }

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        if (saxLog.isDebugEnabled()) {
            saxLog.debug("startPrefixMapping(" + prefix + "," + namespaceURI + ")");
        }


        // Register this prefix mapping
        ArrayStack stack = (ArrayStack) namespaces.get(prefix);
        if (stack == null) {
            stack = new ArrayStack();
            namespaces.put(prefix, stack);
        }
        stack.push(namespaceURI);


    }

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     * @param value the Object to be pushed onto the named stack.
     *
     * @since 1.6
     */
    public void push(String stackName, Object value) {
        ArrayStack namedStack = (ArrayStack) stacksByName.get(stackName);
        if (namedStack == null) {
            namedStack = new ArrayStack();
            stacksByName.put(stackName, namedStack);
        }
        namedStack.push(value);
    }

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