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ElementImpl.java
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ElementImpl.java
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/*
* eXist Open Source Native XML Database
* Copyright (C) 2001-2007 The eXist team
* http://exist-db.org
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $Id$
*/
package org.exist.dom;
import java.io.ByteArrayInputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.TreeSet;
import javax.xml.stream.XMLStreamConstants;
import javax.xml.stream.XMLStreamException;
import org.exist.EXistException;
import org.exist.Namespaces;
import org.apache.commons.io.output.ByteArrayOutputStream;
import org.exist.indexing.StreamListener;
import org.exist.numbering.NodeId;
import org.exist.stax.EmbeddedXMLStreamReader;
import org.exist.stax.ExtendedXMLStreamReader;
import org.exist.storage.DBBroker;
import org.exist.storage.ElementValue;
import org.exist.storage.NodePath;
import org.exist.storage.RangeIndexSpec;
import org.exist.storage.Signatures;
import org.exist.storage.btree.Value;
import org.exist.storage.txn.TransactionException;
import org.exist.storage.txn.TransactionManager;
import org.exist.storage.txn.Txn;
import org.exist.util.ByteArrayPool;
import org.exist.util.ByteConversion;
import org.exist.util.UTF8;
import org.exist.util.pool.NodePool;
import org.exist.xmldb.XmldbURI;
import org.exist.xquery.Constants;
import org.exist.xquery.value.StringValue;
import org.w3c.dom.Attr;
import org.w3c.dom.CDATASection;
import org.w3c.dom.Comment;
import org.w3c.dom.DOMException;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.ProcessingInstruction;
import org.w3c.dom.Text;
import org.w3c.dom.TypeInfo;
import org.w3c.dom.UserDataHandler;
/**
* ElementImpl.java
*
* @author Wolfgang Meier
*/
public class ElementImpl extends NamedNode implements Element, ElementAtExist {
public static final int LENGTH_ELEMENT_CHILD_COUNT = 4; //sizeof int
public static final int LENGTH_ATTRIBUTES_COUNT = 2; //sizeof short
public static final int LENGTH_NS_ID = 2; //sizeof short
public static final int LENGTH_PREFIX_LENGTH = 2; //sizeof short
private short attributes = 0;
private int children = 0;
private int position = 0;
private Map<String, String> namespaceMappings = null;
private int indexType = RangeIndexSpec.NO_INDEX;
private boolean preserveWS = false;
private boolean isDirty = false;
public ElementImpl() {
super(Node.ELEMENT_NODE);
}
/**
* Constructor for the ElementImpl object
*
* @param nodeName Description of the Parameter
*/
public ElementImpl(QName nodeName) {
super(Node.ELEMENT_NODE, nodeName);
this.nodeName = nodeName;
}
public ElementImpl(ElementImpl other) {
super(other);
this.children = other.children;
this.attributes = other.attributes;
this.namespaceMappings = other.namespaceMappings;
this.indexType = other.indexType;
this.position = other.position;
}
/**
* Reset this element to its initial state.
*
*/
@Override
public void clear() {
super.clear();
attributes = 0;
children = 0;
position = 0;
namespaceMappings = null;
//TODO : reset below as well ? -pb
//indexType
//preserveWS
}
public void setIndexType(int idxType) {
this.indexType = idxType;
}
public int getIndexType() {
return indexType;
}
@Override
public boolean isDirty() {
return isDirty;
}
@Override
public void setDirty(boolean dirty) {
this.isDirty = dirty;
}
public void setPosition(int position) {
this.position = position;
}
public int getPosition() {
return position;
}
public boolean declaresNamespacePrefixes() {
if (namespaceMappings == null)
{return false;}
return (namespaceMappings.size() > 0);
}
@Override
public byte[] serialize() {
if (nodeId == null)
{throw new RuntimeException("nodeId = null for element: " +
getQName().getStringValue());}
try {
final SymbolTable symbols = ownerDocument.getBrokerPool().getSymbols();
byte[] prefixData = null;
// serialize namespace prefixes declared in this element
if (declaresNamespacePrefixes()) {
final ByteArrayOutputStream bout = new ByteArrayOutputStream();
final DataOutputStream out = new DataOutputStream(bout);
out.writeShort(namespaceMappings.size());
for (final Iterator<Map.Entry<String, String>> i =
namespaceMappings.entrySet().iterator(); i.hasNext();) {
final Map.Entry<String, String> entry = i.next();
out.writeUTF(entry.getKey());
final short nsId = symbols.getNSSymbol(entry.getValue());
out.writeShort(nsId);
}
prefixData = bout.toByteArray();
}
final short id = symbols.getSymbol(this);
final boolean hasNamespace = nodeName.needsNamespaceDecl();
short nsId = 0;
if (hasNamespace)
{nsId = symbols.getNSSymbol(nodeName.getNamespaceURI());}
final byte idSizeType = Signatures.getSizeType(id);
byte signature = (byte) ((Signatures.Elem << 0x5) | idSizeType);
int prefixLen = 0;
if (hasNamespace) {
if (nodeName.getPrefix() != null && nodeName.getPrefix().length() > 0)
{prefixLen = UTF8.encoded(nodeName.getPrefix());}
signature |= 0x10;
}
if (isDirty)
{signature |= 0x8;}
final int nodeIdLen = nodeId.size();
final byte[] data =
ByteArrayPool.getByteArray(
StoredNode.LENGTH_SIGNATURE_LENGTH + LENGTH_ELEMENT_CHILD_COUNT +
NodeId.LENGTH_NODE_ID_UNITS +
nodeIdLen + LENGTH_ATTRIBUTES_COUNT +
Signatures.getLength(idSizeType) +
(hasNamespace ? prefixLen + 4 : 0) +
(prefixData != null ? prefixData.length : 0)
);
int next = 0;
data[next] = signature;
next += StoredNode.LENGTH_SIGNATURE_LENGTH;
ByteConversion.intToByte(children, data, next);
next += LENGTH_ELEMENT_CHILD_COUNT;
ByteConversion.shortToByte((short) nodeId.units(), data, next);
next += NodeId.LENGTH_NODE_ID_UNITS;
nodeId.serialize(data, next);
next += nodeIdLen;
ByteConversion.shortToByte(attributes, data, next);
next += LENGTH_ATTRIBUTES_COUNT;
Signatures.write(idSizeType, id, data, next);
next += Signatures.getLength(idSizeType);
if (hasNamespace) {
ByteConversion.shortToByte(nsId, data, next);
next += LENGTH_NS_ID;
ByteConversion.shortToByte((short) prefixLen, data, next);
next += LENGTH_PREFIX_LENGTH;
if (nodeName.getPrefix() != null && nodeName.getPrefix().length() > 0)
{UTF8.encode(nodeName.getPrefix(), data, next);}
next += prefixLen;
}
if (prefixData != null)
{System.arraycopy(prefixData, 0, data, next, prefixData.length);}
return data;
} catch (final IOException e) {
return null;
}
}
public static StoredNode deserialize(byte[] data, int start, int len,
DocumentImpl doc, boolean pooled) {
final int end = start + len;
int pos = start;
final byte idSizeType = (byte) (data[pos] & 0x03);
boolean isDirty = (data[pos] & 0x8) == 0x8;
final boolean hasNamespace = (data[pos] & 0x10) == 0x10;
pos += StoredNode.LENGTH_SIGNATURE_LENGTH;
int children = ByteConversion.byteToInt(data, pos);
pos += LENGTH_ELEMENT_CHILD_COUNT;
final int dlnLen = ByteConversion.byteToShort(data, pos);
pos += NodeId.LENGTH_NODE_ID_UNITS;
final NodeId dln = doc.getBrokerPool().getNodeFactory().createFromData(dlnLen, data, pos);
pos += dln.size();
short attributes = ByteConversion.byteToShort(data, pos);
pos += LENGTH_ATTRIBUTES_COUNT;
final short id = (short) Signatures.read(idSizeType, data, pos);
pos += Signatures.getLength(idSizeType);
short nsId = 0;
String prefix = null;
if (hasNamespace) {
nsId = ByteConversion.byteToShort(data, pos);
pos += LENGTH_NS_ID;
int prefixLen = ByteConversion.byteToShort(data, pos);
pos += LENGTH_PREFIX_LENGTH;
if (prefixLen > 0)
{prefix = UTF8.decode(data, pos, prefixLen).toString();}
pos += prefixLen;
}
final String name = doc.getBrokerPool().getSymbols().getName(id);
String namespace = "";
if (nsId != 0)
{namespace = doc.getBrokerPool().getSymbols().getNamespace(nsId);}
ElementImpl node;
if (pooled)
{node = (ElementImpl) NodePool.getInstance().borrowNode(Node.ELEMENT_NODE);}
else
{node = new ElementImpl();}
node.setNodeId(dln);
node.nodeName = doc.getBrokerPool().getSymbols().getQName(Node.ELEMENT_NODE, namespace, name, prefix);
node.children = children;
node.attributes = attributes;
node.isDirty = isDirty;
node.setOwnerDocument(doc);
//TO UNDERSTAND : why is this code here ?
if (end > pos) {
final byte[] pfxData = new byte[end - pos];
System.arraycopy(data, pos, pfxData, 0, end - pos);
final ByteArrayInputStream bin = new ByteArrayInputStream(pfxData);
final DataInputStream in = new DataInputStream(bin);
try {
final short prefixCount = in.readShort();
for (int i = 0; i < prefixCount; i++) {
prefix = in.readUTF();
nsId = in.readShort();
node.addNamespaceMapping(prefix, doc.getBrokerPool().getSymbols().getNamespace(nsId));
}
}
catch (final IOException e) {
e.printStackTrace();
}
}
return node;
}
public static QName readQName(Value value, DocumentImpl document, NodeId nodeId) {
final byte[] data = value.data();
int offset = value.start();
final byte idSizeType = (byte) (data[offset] & 0x03);
final boolean hasNamespace = (data[offset] & 0x10) == 0x10;
offset += StoredNode.LENGTH_SIGNATURE_LENGTH;
offset += LENGTH_ELEMENT_CHILD_COUNT;
offset += NodeId.LENGTH_NODE_ID_UNITS;
offset += nodeId.size();
offset += LENGTH_ATTRIBUTES_COUNT;
final short id = (short) Signatures.read(idSizeType, data, offset);
offset += Signatures.getLength(idSizeType);
short nsId = 0;
String prefix = null;
if (hasNamespace) {
nsId = ByteConversion.byteToShort(data, offset);
offset += LENGTH_NS_ID;
int prefixLen = ByteConversion.byteToShort(data, offset);
offset += LENGTH_PREFIX_LENGTH;
if (prefixLen > 0)
{prefix = UTF8.decode(data, offset, prefixLen).toString();}
offset += prefixLen;
}
final String name = document.getBrokerPool().getSymbols().getName(id);
String namespace = "";
if (nsId != 0)
{namespace = document.getBrokerPool().getSymbols().getNamespace(nsId);}
return new QName(name, namespace, prefix == null ? "" : prefix);
}
public static void readNamespaceDecls(List<String[]> namespaces, Value value, DocumentImpl document, NodeId nodeId) {
final byte[] data = value.data();
int offset = value.start();
final int end = offset + value.getLength();
final byte idSizeType = (byte) (data[offset] & 0x03);
final boolean hasNamespace = (data[offset] & 0x10) == 0x10;
offset += StoredNode.LENGTH_SIGNATURE_LENGTH;
offset += LENGTH_ELEMENT_CHILD_COUNT;
offset += NodeId.LENGTH_NODE_ID_UNITS;
offset += nodeId.size();
offset += LENGTH_ATTRIBUTES_COUNT;
offset += Signatures.getLength(idSizeType);
if (hasNamespace) {
offset += LENGTH_NS_ID;
int prefixLen = ByteConversion.byteToShort(data, offset);
offset += LENGTH_PREFIX_LENGTH;
offset += prefixLen;
}
if (end > offset) {
final byte[] pfxData = new byte[end - offset];
System.arraycopy(data, offset, pfxData, 0, end - offset);
final ByteArrayInputStream bin = new ByteArrayInputStream(pfxData);
final DataInputStream in = new DataInputStream(bin);
try {
final short prefixCount = in.readShort();
String prefix;
short nsId;
for (int i = 0; i < prefixCount; i++) {
prefix = in.readUTF();
nsId = in.readShort();
namespaces.add(new String[] {prefix, document.getBrokerPool().getSymbols().getNamespace(nsId)});
}
}
catch (final IOException e) {
e.printStackTrace();
}
}
}
public void addNamespaceMapping(String prefix, String ns) {
if (prefix == null)
{return;}
if (namespaceMappings == null)
{namespaceMappings = new HashMap<String, String>(1);}
else if (namespaceMappings.containsKey(prefix))
{return;}
namespaceMappings.put(prefix, ns);
}
/**
* Append a child to this node. This method does not rearrange the
* node tree and is only used internally by the parser.
*
* @param child
* @throws DOMException
*/
public void appendChildInternal(StoredNode prevNode, StoredNode child) throws DOMException {
NodeId childId;
if (prevNode == null) {
childId = getNodeId().newChild();
} else {
if (prevNode.getNodeId() == null) {
LOG.warn(getQName() + " : " + prevNode.getNodeName());
}
childId = prevNode.getNodeId().nextSibling();
}
child.setNodeId(childId);
++children;
}
/**
* @see org.w3c.dom.Node#appendChild(org.w3c.dom.Node)
*/
@Override
public Node appendChild(Node child) throws DOMException {
final TransactionManager transact = ownerDocument.getBrokerPool().getTransactionManager();
final Txn transaction = transact.beginTransaction();
final NodeListImpl nl = new NodeListImpl();
nl.add(child);
DBBroker broker = null;
try {
broker = ownerDocument.getBrokerPool().get(null);
appendChildren(transaction, nl, 0);
broker.storeXMLResource(transaction, (DocumentImpl) getOwnerDocument());
transact.commit(transaction); // bugID 3419602
return getLastChild();
} catch (final Exception e) {
transact.abort(transaction);
throw new DOMException(DOMException.INVALID_STATE_ERR, e.getMessage());
} finally {
if (broker != null) {
try {
transact.close(transaction);
} finally {
broker.release();
}
}
}
}
public void appendAttributes(Txn transaction, NodeList attribs) throws DOMException {
final NodeList duplicateAttrs = findDupAttributes(attribs);
removeAppendAttributes(transaction, duplicateAttrs, attribs);
}
private NodeList checkForAttributes(Txn transaction, NodeList nodes) throws DOMException {
NodeListImpl attribs = null;
NodeListImpl rest = null;
for (int i = 0; i < nodes.getLength(); i++) {
final Node next = nodes.item(i);
if (next.getNodeType() == Node.ATTRIBUTE_NODE) {
if (!next.getNodeName().startsWith("xmlns")) {
if (attribs == null)
{attribs = new NodeListImpl();}
attribs.add(next);
}
} else if (attribs != null) {
if (rest == null) {rest = new NodeListImpl();}
rest.add(next);
}
}
if (attribs == null)
{return nodes;}
appendAttributes(transaction, attribs);
return rest;
}
@Override
public void appendChildren(Txn transaction, NodeList nodes, int child) throws DOMException {
// attributes are handled differently. Call checkForAttributes to extract them.
nodes = checkForAttributes(transaction, nodes);
if (nodes == null || nodes.getLength() == 0)
{return;}
DBBroker broker = null;
try {
broker = ownerDocument.getBrokerPool().get(null);
final NodePath path = getPath();
StreamListener listener = null;
//May help getReindexRoot() to make some useful things
broker.getIndexController().setDocument(ownerDocument);
StoredNode reindexRoot = broker.getIndexController().getReindexRoot(this, path, true, true);
broker.getIndexController().setMode(StreamListener.STORE);
// only reindex if reindexRoot is an ancestor of the current node
if (reindexRoot == null) {
listener = broker.getIndexController().getStreamListener();
}
if (children == 0) {
// no children: append a new child
appendChildren(transaction, nodeId.newChild(), null, new NodeImplRef(this), path, nodes, listener);
} else {
if (child == 1) {
final Node firstChild = getFirstChild();
insertBefore(transaction, nodes, firstChild);
} else {
if (child > 1 && child <= children) {
final NodeList cl = getChildNodes();
final StoredNode last = (StoredNode) cl.item(child - 2);
insertAfter(transaction, nodes, last);
} else {
final StoredNode last = (StoredNode) getLastChild();
appendChildren(transaction, last.getNodeId().nextSibling(), null,
new NodeImplRef(getLastNode(last)), path, nodes, listener);
}
}
}
broker.updateNode(transaction, this, false);
broker.getIndexController().reindex(transaction, reindexRoot, StreamListener.STORE);
broker.flush();
} catch (final EXistException e) {
LOG.warn("Exception while appending child node: " + e.getMessage(), e);
} finally {
if (broker != null)
broker.release();
}
}
/**
* Internal append.
*
* @throws DOMException
*/
protected void appendChildren(Txn transaction, NodeId newNodeId, NodeId followingId, NodeImplRef last, NodePath lastPath, NodeList nodes, StreamListener listener) throws DOMException {
if (last == null || last.getNode() == null || last.getNode().getOwnerDocument() == null)
{throw new DOMException(DOMException.INVALID_MODIFICATION_ERR, "invalid node");}
children += nodes.getLength();
for (int i = 0; i < nodes.getLength(); i++) {
final Node child = nodes.item(i);
appendChild(transaction, newNodeId, last, lastPath, child, listener);
NodeId next = newNodeId.nextSibling();
if (followingId != null && next.equals(followingId)) {
next = newNodeId.insertNode(followingId);
if (LOG.isDebugEnabled())
{LOG.debug("Node ID collision on " + followingId + ". Using " + next + " instead.");}
}
newNodeId = next;
}
}
private Node appendChild(Txn transaction, NodeId newNodeId, NodeImplRef last, NodePath lastPath, Node child, StreamListener listener)
throws DOMException {
if (last == null || last.getNode() == null)
//TODO : same test as above ? -pb
{throw new DOMException(DOMException.INVALID_MODIFICATION_ERR, "invalid node");}
final DocumentImpl owner = (DocumentImpl)getOwnerDocument();
DBBroker broker = null;
try {
broker = ownerDocument.getBrokerPool().get(null);
switch (child.getNodeType()) {
case Node.DOCUMENT_FRAGMENT_NODE :
appendChildren(transaction, newNodeId, null, last, lastPath,
child.getChildNodes(), listener);
return null; // TODO: implement document fragments so
//we can return all newly appended children
case Node.ELEMENT_NODE :
// create new element
final ElementImpl elem =
new ElementImpl(
new QName(child.getLocalName() == null ?
child.getNodeName() : child.getLocalName(),
child.getNamespaceURI(),
child.getPrefix())
);
elem.setNodeId(newNodeId);
elem.setOwnerDocument(owner);
final NodeListImpl ch = new NodeListImpl();
final NamedNodeMap attribs = child.getAttributes();
int numActualAttribs = 0;
for (int i = 0; i < attribs.getLength(); i++) {
final Attr attr = (Attr) attribs.item(i);
if (!attr.getNodeName().startsWith("xmlns")) {
ch.add(attr);
numActualAttribs++;
} else {
final String xmlnsDecl = attr.getNodeName();
final String prefix = xmlnsDecl.length() == 5 ? "" : xmlnsDecl.substring(6);
elem.addNamespaceMapping(prefix,attr.getNodeValue());
}
}
final NodeList cl = child.getChildNodes();
for (int i = 0; i < cl.getLength(); i++) {
final Node n = cl.item(i);
if (n.getNodeType() != Node.ATTRIBUTE_NODE)
{ch.add(n);}
}
elem.setChildCount(ch.getLength());
if (numActualAttribs != (short) numActualAttribs)
{throw new DOMException(DOMException.INVALID_MODIFICATION_ERR, "Too many attributes");}
elem.setAttributes((short) numActualAttribs);
lastPath.addComponent(elem.getQName());
// insert the node
broker.insertNodeAfter(transaction, last.getNode(), elem);
broker.indexNode(transaction, elem, lastPath);
broker.getIndexController().indexNode(transaction, elem, lastPath, listener);
elem.setChildCount(0);
last.setNode(elem);
//process child nodes
elem.appendChildren(transaction, newNodeId.newChild(), null, last, lastPath, ch, listener);
broker.endElement(elem, lastPath, null);
broker.getIndexController().endElement(transaction, elem, lastPath, listener);
lastPath.removeLastComponent();
return elem;
case Node.TEXT_NODE :
final TextImpl text = new TextImpl(newNodeId, ((Text) child).getData());
text.setOwnerDocument(owner);
// insert the node
broker.insertNodeAfter(transaction, last.getNode(), text);
broker.indexNode(transaction, text, lastPath);
broker.getIndexController().indexNode(transaction, text, lastPath, listener);
last.setNode(text);
return text;
case Node.CDATA_SECTION_NODE :
final CDATASectionImpl cdata = new CDATASectionImpl(newNodeId, ((CDATASection) child).getData());
cdata.setOwnerDocument(owner);
// insert the node
broker.insertNodeAfter(transaction, last.getNode(), cdata);
broker.indexNode(transaction, cdata, lastPath);
last.setNode(cdata);
return cdata;
case Node.ATTRIBUTE_NODE:
final Attr attr = (Attr) child;
final String ns = attr.getNamespaceURI();
final String prefix = (Namespaces.XML_NS.equals(ns) ? "xml" : attr.getPrefix());
String name = attr.getLocalName();
if (name == null) {name = attr.getName();}
final QName attrName = new QName(name, ns, prefix);
final AttrImpl attrib = new AttrImpl(attrName, attr.getValue());
attrib.setNodeId(newNodeId);
attrib.setOwnerDocument(owner);
if (ns != null && attrName.compareTo(Namespaces.XML_ID_QNAME) == Constants.EQUAL) {
// an xml:id attribute. Normalize the attribute and set its type to ID
attrib.setValue(StringValue.trimWhitespace(StringValue.collapseWhitespace(attrib.getValue())));
attrib.setType(AttrImpl.ID);
} else {
attrName.setNameType(ElementValue.ATTRIBUTE);
}
broker.insertNodeAfter(transaction, last.getNode(), attrib);
broker.indexNode(transaction, attrib, lastPath);
broker.getIndexController().indexNode(transaction, attrib, lastPath, listener);
last.setNode(attrib);
return attrib;
case Node.COMMENT_NODE:
final CommentImpl comment = new CommentImpl(((Comment) child).getData());
comment.setNodeId(newNodeId);
comment.setOwnerDocument(owner);
// insert the node
broker.insertNodeAfter(transaction, last.getNode(), comment);
broker.indexNode(transaction, comment, lastPath);
last.setNode(comment);
return comment;
case Node.PROCESSING_INSTRUCTION_NODE:
final ProcessingInstructionImpl pi =
new ProcessingInstructionImpl(newNodeId,
((ProcessingInstruction) child).getTarget(),
((ProcessingInstruction) child).getData());
pi.setOwnerDocument(owner);
//insert the node
broker.insertNodeAfter(transaction, last.getNode(), pi);
broker.indexNode(transaction, pi, lastPath);
last.setNode(pi);
return pi;
default :
throw new DOMException(DOMException.INVALID_MODIFICATION_ERR,
"Unknown node type: " +
child.getNodeType() + " " + child.getNodeName());
}
} catch (final EXistException e) {
LOG.warn("Exception while appending node: " + e.getMessage(), e);
} finally {
if (broker != null)
broker.release();
}
return null;
}
@Override
public short getAttributesCount() {
return attributes;
}
/**
* Set the attributes that belong to this node.
*
* @param attribNum The new attributes value
*/
@Override
public void setAttributes(short attribNum) {
attributes = attribNum;
}
/**
* @see org.w3c.dom.Element#getAttribute(java.lang.String)
*/
public String getAttribute(String name) {
final Attr attr = findAttribute(name);
return attr != null ? attr.getValue() : "";
}
/**
* @see org.w3c.dom.Element#getAttributeNS(java.lang.String, java.lang.String)
*/
public String getAttributeNS(String namespaceURI, String localName) {
final Attr attr = findAttribute(new QName(localName, namespaceURI));
return attr != null ? attr.getValue() : "";
//XXX: if not present must return null
}
@Deprecated //move as soon as getAttributeNS null issue resolved
public String _getAttributeNS(String namespaceURI, String localName) {
final Attr attr = findAttribute(new QName(localName, namespaceURI));
return attr != null ? attr.getValue() : null;
}
/**
* @see org.w3c.dom.Element#getAttributeNode(java.lang.String)
*/
public Attr getAttributeNode(String name) {
return findAttribute(name);
}
/**
* @see org.w3c.dom.Element#getAttributeNodeNS(java.lang.String, java.lang.String)
*/
public Attr getAttributeNodeNS(String namespaceURI, String localName) {
return findAttribute(new QName(localName, namespaceURI));
}
/**
* @see org.w3c.dom.Node#getAttributes()
*/
@Override
public NamedNodeMap getAttributes() {
final NamedNodeMapImpl map = new NamedNodeMapImpl();
if (getAttributesCount() > 0) {
DBBroker broker = null;
try {
broker = ownerDocument.getBrokerPool().get(null);
final Iterator<StoredNode> iterator = broker.getNodeIterator(this);
iterator.next();
final int ccount = getChildCount();
for (int i = 0; i < ccount; i++) {
final StoredNode next = iterator.next();
if (next.getNodeType() != Node.ATTRIBUTE_NODE)
{break;}
map.setNamedItem(next);
}
} catch (final EXistException e) {
LOG.warn("Exception while retrieving attributes: " + e.getMessage());
} finally {
if (broker != null)
broker.release();
}
}
if (declaresNamespacePrefixes()) {
for (final Iterator<Map.Entry<String, String>> i =
namespaceMappings.entrySet().iterator(); i.hasNext(); ) {
final Map.Entry<String, String> entry = i.next();
final String prefix = entry.getKey().toString();
final String ns = entry.getValue().toString();
final QName attrName = new QName(prefix, Namespaces.XMLNS_NS, "xmlns");
final AttrImpl attr = new AttrImpl(attrName, ns);
attr.setOwnerDocument(ownerDocument);
map.setNamedItem(attr);
}
}
return map;
}
private AttrImpl findAttribute(String qname) {
DBBroker broker = null;
try {
broker = ownerDocument.getBrokerPool().get(null);
final Iterator<StoredNode> iterator = broker.getNodeIterator(this);
iterator.next();
return findAttribute(qname, iterator, this);
} catch (final EXistException e) {
LOG.warn("Exception while retrieving attributes: " + e.getMessage());
} finally {
if (broker != null)
broker.release();
}
return null;
}
private AttrImpl findAttribute(String qname, Iterator<StoredNode> iterator, StoredNode current) {
final int ccount = current.getChildCount();
StoredNode next;
for (int i = 0; i < ccount; i++) {
next = iterator.next();
if (next.getNodeType() != Node.ATTRIBUTE_NODE)
{break;}
if (next.getNodeName().equals(qname))
{return (AttrImpl) next;}
}
return null;
}
private AttrImpl findAttribute(QName qname) {
DBBroker broker = null;
try {
broker = ownerDocument.getBrokerPool().get(null);
final Iterator<StoredNode> iterator = broker.getNodeIterator(this);
iterator.next();
return findAttribute(qname, iterator, this);
} catch (final EXistException e) {
LOG.warn("Exception while retrieving attributes: " + e.getMessage());
} finally {
if (broker != null)
broker.release();
}
return null;
}
private AttrImpl findAttribute(QName qname, Iterator<StoredNode> iterator, StoredNode current) {
final int ccount = current.getChildCount();
for (int i = 0; i < ccount; i++) {
final StoredNode next = iterator.next();
if (next.getNodeType() != Node.ATTRIBUTE_NODE)
{break;}
if (next.getQName().equalsSimple(qname))
{return (AttrImpl) next;}
}
return null;
}
/**
* Returns a list of all attribute nodes in attrs that are already present
* in the current element.
*
* @param attrs
* @return The attributes list
* @throws DOMException
*/
private NodeList findDupAttributes(NodeList attrs) throws DOMException {
NodeListImpl dupList = null;
final NamedNodeMap map = getAttributes();
for (int i = 0; i < attrs.getLength(); i++) {
final Node attr = attrs.item(i);
//Workaround: Xerces sometimes returns null for getLocalName() !!!!
String localName = attr.getLocalName();
if (localName == null)
{localName = attr.getNodeName();}
final Node duplicate = map.getNamedItemNS(attr.getNamespaceURI(), localName);
if (duplicate != null) {
if (dupList == null)
{dupList = new NodeListImpl();}
dupList.add(duplicate);
}
}
return dupList;
}
/**
* @see org.exist.dom.NodeImpl#getChildCount()
*/
@Override
public int getChildCount() {
return children;
}
@Override
public NodeList getChildNodes() {
final NodeListImpl childList = new NodeListImpl(1);
DBBroker broker = null;
try {
broker = ownerDocument.getBrokerPool().get(null);
for (final EmbeddedXMLStreamReader reader = broker.getXMLStreamReader(this, true);
reader.hasNext();) {
final int status = reader.next();
if (status != XMLStreamConstants.END_ELEMENT) {
if (((NodeId) reader.getProperty(ExtendedXMLStreamReader.PROPERTY_NODE_ID)).isChildOf(nodeId))
{childList.add(reader.getNode());}
}
}
} catch (final IOException e) {
LOG.warn("Internal error while reading child nodes: " + e.getMessage(), e);
} catch (final XMLStreamException e) {
LOG.warn("Internal error while reading child nodes: " + e.getMessage(), e);
} catch (final EXistException e) {
LOG.warn("Internal error while reading child nodes: " + e.getMessage(), e);
} finally {
if (broker != null)
broker.release();
}
return childList;
}
/**
* @see org.w3c.dom.Element#getElementsByTagName(java.lang.String)
*/
public NodeList getElementsByTagName(String tagName) {
final QName qname = new QName(tagName, "", null);
return ((DocumentImpl)getOwnerDocument()).findElementsByTagName(this, qname);
}
/**
* @see org.w3c.dom.Element#getElementsByTagNameNS(java.lang.String, java.lang.String)
*/
public NodeList getElementsByTagNameNS(String namespaceURI, String localName) {
final QName qname = new QName(localName, namespaceURI, null);
return ((DocumentImpl)getOwnerDocument()).findElementsByTagName(this, qname);
}
/**
* @see org.w3c.dom.Node#getFirstChild()
*/
@Override
public Node getFirstChild() {
if (!hasChildNodes() || getChildCount() == getAttributesCount())
{return null;}
DBBroker broker = null;
try {
broker = ownerDocument.getBrokerPool().get(null);
final Iterator<StoredNode> iterator = broker.getNodeIterator(this);
iterator.next();
StoredNode next;
for (int i = 0; i < getChildCount(); i++) {
next = iterator.next();
if (next.getNodeType() != Node.ATTRIBUTE_NODE)
{return next;}
}
} catch (final EXistException e) {
LOG.warn("Exception while retrieving child node: " + e.getMessage(), e);
} finally {
if (broker != null)
broker.release();
}
return null;
}
@Override
public Node getLastChild() {
if (!hasChildNodes())
{return null;}
Node node = null;
if (!isDirty) {
final NodeId child = nodeId.getChild(children);
node = ownerDocument.getNode(new NodeProxy(ownerDocument, child));
}
if (node == null) {
final NodeList cl = getChildNodes();
return cl.item(cl.getLength() - 1);
}
return node;
}
/**
* @see org.w3c.dom.Element#getTagName()
*/
public String getTagName() {
return nodeName.getStringValue();
}
/**
* @see org.w3c.dom.Element#hasAttribute(java.lang.String)
*/
public boolean hasAttribute(String name) {
return findAttribute(name) != null;
}
/**
* @see org.w3c.dom.Element#hasAttributeNS(java.lang.String, java.lang.String)
*/
public boolean hasAttributeNS(String namespaceURI, String localName) {
return findAttribute(new QName(localName, namespaceURI)) != null;
}
/**
* @see org.w3c.dom.Node#hasAttributes()
*/
@Override
public boolean hasAttributes() {
return (getAttributesCount() > 0);
}
/**
* @see org.w3c.dom.Node#hasChildNodes()
*/
@Override
public boolean hasChildNodes() {
return children > 0;
}
/**
* @see org.w3c.dom.Node#getNodeValue()
*/
//TODO getNodeValue() on org.exist.dom.ElementImpl should return null according to W3C spec, and getTextContent() should be implemented!
@Override
public String getNodeValue() /*throws DOMException*/ {
//TODO : parametrize the boolean value ?
DBBroker broker = null;
try {
broker = ownerDocument.getBrokerPool().get(null);
return broker.getNodeValue(this, false);
} catch (final EXistException e) {
LOG.warn("Exception while reading node value: " + e.getMessage(), e);
} finally {
if (broker != null)
broker.release();
}
return "";
}