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*/ |
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/* |
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* Licensed to the Apache Software Foundation (ASF) under one or more |
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* contributor license agreements. See the NOTICE file distributed with |
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* this work for additional information regarding copyright ownership. |
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* The ASF licenses this file to You under the Apache License, Version 2.0 |
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* (the "License"); you may not use this file except in compliance with |
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* the License. You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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package com.sun.org.apache.xalan.internal.xsltc.dom; |
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import com.sun.org.apache.xalan.internal.xsltc.runtime.BasisLibrary; |
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import com.sun.org.apache.xml.internal.dtm.DTMAxisIterator; |
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import com.sun.org.apache.xml.internal.dtm.ref.DTMAxisIteratorBase; |
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*/ |
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public final class NthIterator extends DTMAxisIteratorBase { |
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private DTMAxisIterator _source; |
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private final int _position; |
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private boolean _ready; |
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public NthIterator(DTMAxisIterator source, int n) { |
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_source = source; |
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_position = n; |
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} |
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public void setRestartable(boolean isRestartable) { |
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_isRestartable = isRestartable; |
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_source.setRestartable(isRestartable); |
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} |
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public DTMAxisIterator cloneIterator() { |
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try { |
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final NthIterator clone = (NthIterator) super.clone(); |
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clone._source = _source.cloneIterator(); |
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clone._isRestartable = false; |
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return clone; |
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} |
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catch (CloneNotSupportedException e) { |
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BasisLibrary.runTimeError(BasisLibrary.ITERATOR_CLONE_ERR, |
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e.toString()); |
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return null; |
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} |
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} |
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public int next() { |
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if (_ready) { |
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_ready = false; |
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return _source.getNodeByPosition(_position); |
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} |
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return DTMAxisIterator.END; |
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/* |
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if (_ready && _position > 0) { |
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final int pos = _source.isReverse() |
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? _source.getLast() - _position + 1 |
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: _position; |
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_ready = false; |
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int node; |
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while ((node = _source.next()) != DTMAxisIterator.END) { |
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if (pos == _source.getPosition()) { |
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return node; |
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} |
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} |
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} |
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return DTMAxisIterator.END; |
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*/ |
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} |
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public DTMAxisIterator setStartNode(final int node) { |
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if (_isRestartable) { |
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_source.setStartNode(node); |
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_ready = true; |
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} |
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return this; |
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} |
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public DTMAxisIterator reset() { |
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_source.reset(); |
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_ready = true; |
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return this; |
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} |
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public int getLast() { |
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return 1; |
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} |
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public int getPosition() { |
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return 1; |
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} |
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public void setMark() { |
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_source.setMark(); |
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} |
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public void gotoMark() { |
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_source.gotoMark(); |
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} |
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} |