io.sirix.axis.AttributeAxis Maven / Gradle / Ivy
/**
* Copyright (c) 2011, University of Konstanz, Distributed Systems Group All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted
* provided that the following conditions are met: * Redistributions of source code must retain the
* above copyright notice, this list of conditions and the following disclaimer. * Redistributions
* in binary form must reproduce the above copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other materials provided with the distribution.
* * Neither the name of the University of Konstanz nor the names of its contributors may be used to
* endorse or promote products derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package io.sirix.axis;
import io.sirix.api.xml.XmlNodeReadOnlyTrx;
import io.sirix.node.NodeKind;
/**
*
* Iterate over all attibutes of a given node.
*
*/
public final class AttributeAxis extends AbstractAxis {
/** Remember next key to visit. */
private int mNextIndex;
/**
* Constructor initializing internal state.
*
* @param rtx exclusive (immutable) mTrx to iterate with
*/
public AttributeAxis(final XmlNodeReadOnlyTrx rtx) {
super(rtx);
}
@Override
public void reset(final long nodeKey) {
super.reset(nodeKey);
mNextIndex = 0;
}
@Override
protected long nextKey() {
// Move back to element, if there was already an attribute found. In
// this case the current node was set to an attribute by resetToLastKey().
if (mNextIndex > 0) {
assert asXmlNodeReadTrx().getKind() == NodeKind.ATTRIBUTE;
asXmlNodeReadTrx().moveToParent();
}
if (asXmlNodeReadTrx().getKind() == NodeKind.ELEMENT) {
final XmlNodeReadOnlyTrx rtx = (XmlNodeReadOnlyTrx) asXmlNodeReadTrx();
if (mNextIndex < rtx.getAttributeCount()) {
final long key = rtx.getAttributeKey(mNextIndex);
mNextIndex += 1;
return key;
}
}
return done();
}
}