下面列出了org.w3c.dom.xpath.XPathResult#com.sun.org.apache.xpath.internal.res.XPATHErrorResources 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
/**
*
* Basis ::= AxisName '::' NodeTest
* | AbbreviatedBasis
*
* @return FROM_XXX axes type, found in {@link com.sun.org.apache.xpath.internal.compiler.Keywords}.
*
* @throws javax.xml.transform.TransformerException
*/
protected int AxisName() throws javax.xml.transform.TransformerException
{
Object val = Keywords.getAxisName(m_token);
if (null == val)
{
error(XPATHErrorResources.ER_ILLEGAL_AXIS_NAME,
new Object[]{ m_token }); //"illegal axis name: "+m_token);
}
int axesType = ((Integer) val).intValue();
appendOp(2, axesType);
return axesType;
}
/**
* Get a local variable or parameter in the current stack frame.
*
*
* @param xctxt The XPath context, which must be passed in order to
* lazy evaluate variables.
*
* @param index Local variable index relative to the current stack
* frame bottom.
*
* @return The value of the variable.
*
* @throws TransformerException
*/
public XObject getLocalVariable(XPathContext xctxt, int index)
throws TransformerException
{
index += _currentFrameBottom;
XObject val = _stackFrames[index];
if(null == val)
throw new TransformerException(XSLMessages.createXPATHMessage(XPATHErrorResources.ER_VARIABLE_ACCESSED_BEFORE_BIND, null),
xctxt.getSAXLocator());
// "Variable accessed before it is bound!", xctxt.getSAXLocator());
// Lazy execution of variables.
if (val.getType() == XObject.CLASS_UNRESOLVEDVARIABLE)
return (_stackFrames[index] = val.execute(xctxt));
return val;
}
/**
*
* RelativeLocationPath ::= Step
* | RelativeLocationPath '/' Step
* | AbbreviatedRelativeLocationPath
*
* @returns true if, and only if, a RelativeLocationPath was matched
*
* @throws javax.xml.transform.TransformerException
*/
protected boolean RelativeLocationPath()
throws javax.xml.transform.TransformerException
{
if (!Step())
{
return false;
}
while (tokenIs('/'))
{
nextToken();
if (!Step())
{
// RelativeLocationPath can't end with a trailing '/'
// "Location step expected following '/' or '//'"
error(XPATHErrorResources.ER_EXPECTED_LOC_STEP, null);
}
}
return true;
}
/**
* Is the extension function available?
*/
public boolean functionAvailable(String ns, String funcName)
throws javax.xml.transform.TransformerException {
try {
if ( funcName == null ) {
String fmsg = XSLMessages.createXPATHMessage(
XPATHErrorResources.ER_ARG_CANNOT_BE_NULL,
new Object[] {"Function Name"} );
throw new NullPointerException ( fmsg );
}
//Find the XPathFunction corresponding to namespace and funcName
javax.xml.namespace.QName myQName = new QName( ns, funcName );
javax.xml.xpath.XPathFunction xpathFunction =
resolver.resolveFunction ( myQName, 0 );
if ( xpathFunction == null ) {
return false;
}
return true;
} catch ( Exception e ) {
return false;
}
}
/**
* Set the root node of the TreeWalker.
* (Not part of the DOM2 TreeWalker interface).
*
* @param root The context node of this step.
*/
public void setRoot(int root)
{
// %OPT% Get this directly from the lpi.
XPathContext xctxt = wi().getXPathContext();
m_dtm = xctxt.getDTM(root);
m_traverser = m_dtm.getAxisTraverser(m_axis);
m_isFresh = true;
m_foundLast = false;
m_root = root;
m_currentNode = root;
if (DTM.NULL == root)
{
throw new RuntimeException(
XSLMessages.createXPATHMessage(XPATHErrorResources.ER_SETTING_WALKER_ROOT_TO_NULL, null)); //"\n !!!! Error! Setting the root of a walker to null!!!");
}
resetProximityPositions();
}
/**
* Returns the <code>index</code>th item in the snapshot collection. If
* <code>index</code> is greater than or equal to the number of nodes in
* the list, this method returns <code>null</code>. Unlike the iterator
* result, the snapshot does not become invalid, but may not correspond
* to the current document if it is mutated.
* @param index Index into the snapshot collection.
* @return The node at the <code>index</code>th position in the
* <code>NodeList</code>, or <code>null</code> if that is not a valid
* index.
* @exception XPathException
* TYPE_ERR: raised if <code>resultType</code> is not
* <code>UNORDERED_NODE_SNAPSHOT_TYPE</code> or
* <code>ORDERED_NODE_SNAPSHOT_TYPE</code>.
*
* @see org.w3c.dom.xpath.XPathResult#snapshotItem(int)
*/
public Node snapshotItem(int index) throws XPathException {
if ((m_resultType != UNORDERED_NODE_SNAPSHOT_TYPE) &&
(m_resultType != ORDERED_NODE_SNAPSHOT_TYPE)) {
String fmsg = XPATHMessages.createXPATHMessage(XPATHErrorResources.ER_NON_SNAPSHOT_TYPE, new Object[] {m_xpath.getPatternString(), getTypeString(m_resultType)});
throw new XPathException(XPathException.TYPE_ERR, fmsg);
// "The method snapshotItem cannot be called on the XPathResult of XPath expression {0} because its XPathResultType is {1}.
// This method applies only to types UNORDERED_NODE_SNAPSHOT_TYPE and ORDERED_NODE_SNAPSHOT_TYPE."},
}
Node node = m_list.item(index);
// Wrap "namespace node" in an XPathNamespace
if (isNamespaceNode(node)) {
return new XPathNamespaceImpl(node);
} else {
return node;
}
}
/**
* Returns the previous node in the set and moves the position of the
* iterator backwards in the set.
* @return The previous <code>Node</code> in the set being iterated over,
* or<code>null</code> if there are no more members in that set.
* @throws DOMException
* INVALID_STATE_ERR: Raised if this method is called after the
* <code>detach</code> method was invoked.
* @throws RuntimeException thrown if this NodeSet is not of
* a cached type, and hence doesn't know what the previous node was.
*/
public Node previousNode() throws DOMException
{
if (!m_cacheNodes)
throw new RuntimeException(
XSLMessages.createXPATHMessage(XPATHErrorResources.ER_NODESET_CANNOT_ITERATE, null)); //"This NodeSet can not iterate to a previous node!");
if ((m_next - 1) > 0)
{
m_next--;
return this.elementAt(m_next);
}
else
return null;
}
/**
*
*
* StringExpr ::= Expr
*
*
* @throws javax.xml.transform.TransformerException
*/
protected void BooleanExpr() throws javax.xml.transform.TransformerException
{
int opPos = m_ops.getOp(OpMap.MAPINDEX_LENGTH);
appendOp(2, OpCodes.OP_BOOL);
Expr();
int opLen = m_ops.getOp(OpMap.MAPINDEX_LENGTH) - opPos;
if (opLen == 2)
{
error(XPATHErrorResources.ER_BOOLEAN_ARG_NO_LONGER_OPTIONAL, null); //"boolean(...) argument is no longer optional with 19990709 XPath draft.");
}
m_ops.setOp(opPos + OpMap.MAPINDEX_LENGTH, opLen);
}
/**
* Returns the <code>index</code>th item in the snapshot collection. If
* <code>index</code> is greater than or equal to the number of nodes in
* the list, this method returns <code>null</code>. Unlike the iterator
* result, the snapshot does not become invalid, but may not correspond
* to the current document if it is mutated.
* @param index Index into the snapshot collection.
* @return The node at the <code>index</code>th position in the
* <code>NodeList</code>, or <code>null</code> if that is not a valid
* index.
* @exception XPathException
* TYPE_ERR: raised if <code>resultType</code> is not
* <code>UNORDERED_NODE_SNAPSHOT_TYPE</code> or
* <code>ORDERED_NODE_SNAPSHOT_TYPE</code>.
*
* @see org.w3c.dom.xpath.XPathResult#snapshotItem(int)
*/
public Node snapshotItem(int index) throws XPathException {
if ((m_resultType != UNORDERED_NODE_SNAPSHOT_TYPE) &&
(m_resultType != ORDERED_NODE_SNAPSHOT_TYPE)) {
String fmsg = XPATHMessages.createXPATHMessage(XPATHErrorResources.ER_NON_SNAPSHOT_TYPE, new Object[] {m_xpath.getPatternString(), getTypeString(m_resultType)});
throw new XPathException(XPathException.TYPE_ERR, fmsg);
// "The method snapshotItem cannot be called on the XPathResult of XPath expression {0} because its XPathResultType is {1}.
// This method applies only to types UNORDERED_NODE_SNAPSHOT_TYPE and ORDERED_NODE_SNAPSHOT_TYPE."},
}
Node node = m_list.item(index);
// Wrap "namespace node" in an XPathNamespace
if (isNamespaceNode(node)) {
return new XPathNamespaceImpl(node);
} else {
return node;
}
}
/**
* Get a local variable or parameter in the current stack frame.
*
*
* @param xctxt The XPath context, which must be passed in order to
* lazy evaluate variables.
*
* @param index Local variable index relative to the current stack
* frame bottom.
*
* @return The value of the variable.
*
* @throws TransformerException
*/
public XObject getLocalVariable(XPathContext xctxt, int index)
throws TransformerException
{
index += _currentFrameBottom;
XObject val = _stackFrames[index];
if(null == val)
throw new TransformerException(XSLMessages.createXPATHMessage(XPATHErrorResources.ER_VARIABLE_ACCESSED_BEFORE_BIND, null),
xctxt.getSAXLocator());
// "Variable accessed before it is bound!", xctxt.getSAXLocator());
// Lazy execution of variables.
if (val.getType() == XObject.CLASS_UNRESOLVEDVARIABLE)
return (_stackFrames[index] = val.execute(xctxt));
return val;
}
/**
* Returns the previous node in the set and moves the position of the
* iterator backwards in the set.
* @return The previous <code>Node</code> in the set being iterated over,
* or<code>null</code> if there are no more members in that set.
* @throws DOMException
* INVALID_STATE_ERR: Raised if this method is called after the
* <code>detach</code> method was invoked.
* @throws RuntimeException thrown if this NodeSet is not of
* a cached type, and hence doesn't know what the previous node was.
*/
public Node previousNode() throws DOMException
{
if (!m_cacheNodes)
throw new RuntimeException(
XSLMessages.createXPATHMessage(XPATHErrorResources.ER_NODESET_CANNOT_ITERATE, null)); //"This NodeSet can not iterate to a previous node!");
if ((m_next - 1) > 0)
{
m_next--;
return this.elementAt(m_next);
}
else
return null;
}
/**
* <p>Compile an XPath expression for later evaluation.</p>
*
* <p>If <code>expression</code> contains any {@link XPathFunction}s,
* they must be available via the {@link XPathFunctionResolver}.
* An {@link XPathExpressionException} will be thrown if the <code>XPathFunction</code>
* cannot be resovled with the <code>XPathFunctionResolver</code>.</p>
*
* <p>If <code>expression</code> is <code>null</code>, a <code>NullPointerException</code> is thrown.</p>
*
* @param expression The XPath expression.
*
* @return Compiled XPath expression.
* @throws XPathExpressionException If <code>expression</code> cannot be compiled.
* @throws NullPointerException If <code>expression</code> is <code>null</code>.
*/
public XPathExpression compile(String expression)
throws XPathExpressionException {
if ( expression == null ) {
String fmsg = XSLMessages.createXPATHMessage(
XPATHErrorResources.ER_ARG_CANNOT_BE_NULL,
new Object[] {"XPath expression"} );
throw new NullPointerException ( fmsg );
}
try {
com.sun.org.apache.xpath.internal.XPath xpath = new XPath (expression, null,
prefixResolver, com.sun.org.apache.xpath.internal.XPath.SELECT );
// Can have errorListener
XPathExpressionImpl ximpl = new XPathExpressionImpl (xpath,
prefixResolver, functionResolver, variableResolver,
featureSecureProcessing, useServiceMechanism, featureManager );
return ximpl;
} catch ( javax.xml.transform.TransformerException te ) {
throw new XPathExpressionException ( te ) ;
}
}
/**
* Returns the previous node in the set and moves the position of the
* iterator backwards in the set.
* @return The previous <code>Node</code> in the set being iterated over,
* or<code>DTM.NULL</code> if there are no more members in that set.
* @throws DOMException
* INVALID_STATE_ERR: Raised if this method is called after the
* <code>detach</code> method was invoked.
* @throws RuntimeException thrown if this NodeSetDTM is not of
* a cached type, and hence doesn't know what the previous node was.
*/
public int previousNode()
{
if (!m_cacheNodes)
throw new RuntimeException(
XSLMessages.createXPATHMessage(XPATHErrorResources.ER_NODESETDTM_CANNOT_ITERATE, null)); //"This NodeSetDTM can not iterate to a previous node!");
if ((m_next - 1) > 0)
{
m_next--;
return this.elementAt(m_next);
}
else
return DTM.NULL;
}
/**
* <p>Establishes a variable resolver.</p>
*
* @param resolver Variable Resolver
*/
public void setXPathVariableResolver(XPathVariableResolver resolver) {
if ( resolver == null ) {
String fmsg = XSLMessages.createXPATHMessage(
XPATHErrorResources.ER_ARG_CANNOT_BE_NULL,
new Object[] {"XPathVariableResolver"} );
throw new NullPointerException( fmsg );
}
this.variableResolver = resolver;
}
/**
* Cast result object to a boolean. Always issues an error.
*
* @return false
*
* @throws javax.xml.transform.TransformerException
*/
public boolean bool() throws javax.xml.transform.TransformerException
{
error(XPATHErrorResources.ER_CANT_CONVERT_TO_NUMBER,
new Object[]{ getTypeString() }); //"Can not convert "+getTypeString()+" to a number");
return false;
}
/**
* The value of this number result.
* @exception XPathException
* TYPE_ERR: raised if <code>resultType</code> is not
* <code>NUMBER_TYPE</code>.
* @see org.w3c.dom.xpath.XPathResult#getNumberValue()
*/
public double getNumberValue() throws XPathException {
if (getResultType() != NUMBER_TYPE) {
String fmsg = XPATHMessages.createXPATHMessage(XPATHErrorResources.ER_CANT_CONVERT_XPATHRESULTTYPE_TO_NUMBER, new Object[] {m_xpath.getPatternString(), getTypeString(m_resultType)});
throw new XPathException(XPathException.TYPE_ERR,fmsg);
// "The XPathResult of XPath expression {0} has an XPathResultType of {1} which cannot be converted to a number"
} else {
try {
return m_resultObj.num();
} catch (Exception e) {
// Type check above should prevent this exception from occurring.
throw new XPathException(XPathException.TYPE_ERR,e.getMessage());
}
}
}
/**
* Append a Node onto the vector.
*
* @param value Node to add to the vector
*/
public void addElement(Node value)
{
if (!m_mutable)
throw new RuntimeException(XSLMessages.createXPATHMessage(XPATHErrorResources.ER_NODESET_NOT_MUTABLE, null)); //"This NodeSet is not mutable!");
if ((m_firstFree + 1) >= m_mapSize)
{
if (null == m_map)
{
m_map = new Node[m_blocksize];
m_mapSize = m_blocksize;
}
else
{
m_mapSize += m_blocksize;
Node newMap[] = new Node[m_mapSize];
System.arraycopy(m_map, 0, newMap, 0, m_firstFree + 1);
m_map = newMap;
}
}
m_map[m_firstFree] = value;
m_firstFree++;
}
/**
* Remove a node.
*
* @param n Node to be added
* @throws RuntimeException thrown if this NodeSet is not of
* a mutable type.
*/
public void removeNode(Node n)
{
if (!m_mutable)
throw new RuntimeException(XSLMessages.createXPATHMessage(XPATHErrorResources.ER_NODESET_NOT_MUTABLE, null)); //"This NodeSet is not mutable!");
this.removeElement(n);
}
/**
* Cast object to type t.
*
* @param t Type of object to cast this to
* @param support XPath context to use for the conversion
*
* @return This object as the given type t
*
* @throws javax.xml.transform.TransformerException
*/
public Object castToType(int t, XPathContext support)
throws javax.xml.transform.TransformerException
{
Object result;
switch (t)
{
case CLASS_STRING :
result = str();
break;
case CLASS_NUMBER :
result = new Double(num());
break;
case CLASS_NODESET :
result = iter();
break;
case CLASS_BOOLEAN :
result = new Boolean(bool());
break;
case CLASS_UNKNOWN :
result = m_obj;
break;
// %TBD% What to do here?
// case CLASS_RTREEFRAG :
// result = rtree(support);
// break;
default :
error(XPATHErrorResources.ER_CANT_CONVERT_TO_TYPE,
new Object[]{ getTypeString(),
Integer.toString(t) }); //"Can not convert "+getTypeString()+" to a type#"+t);
result = null;
}
return result;
}
/**
* Construct a XNodeSet object.
*
* @param val String object this will wrap.
*/
private XStringForChars(String val)
{
super(val);
throw new IllegalArgumentException(
XSLMessages.createXPATHMessage(XPATHErrorResources.ER_XSTRINGFORCHARS_CANNOT_TAKE_STRING, null)); //"XStringForChars can not take a string for an argument!");
}
/**
* Given an FROM_stepType position, return the position of the
* first predicate, if there is one, or else this will point
* to the end of the FROM_stepType.
* Example:
* int posOfPredicate = xpath.getNextOpPos(stepPos);
* boolean hasPredicates =
* OpCodes.OP_PREDICATE == xpath.getOp(posOfPredicate);
*
* @param opPos position of FROM_stepType op.
* @return position of predicate in FROM_stepType structure.
*/
public int getFirstPredicateOpPos(int opPos)
throws javax.xml.transform.TransformerException
{
int stepType = m_opMap.elementAt(opPos);
if ((stepType >= OpCodes.AXES_START_TYPES)
&& (stepType <= OpCodes.AXES_END_TYPES))
{
return opPos + m_opMap.elementAt(opPos + 2);
}
else if ((stepType >= OpCodes.FIRST_NODESET_OP)
&& (stepType <= OpCodes.LAST_NODESET_OP))
{
return opPos + m_opMap.elementAt(opPos + 1);
}
else if(-2 == stepType)
{
return -2;
}
else
{
error(com.sun.org.apache.xpath.internal.res.XPATHErrorResources.ER_UNKNOWN_OPCODE,
new Object[]{ String.valueOf(stepType) }); //"ERROR! Unknown op code: "+m_opMap[opPos]);
return -1;
}
}
/**
* Add a node to the NodeSet. Not all types of NodeSets support this
* operation
*
* @param n Node to be added
* @throws RuntimeException thrown if this NodeSet is not of
* a mutable type.
*/
public void addNode(Node n)
{
if (!m_mutable)
throw new RuntimeException(XSLMessages.createXPATHMessage(XPATHErrorResources.ER_NODESET_NOT_MUTABLE, null)); //"This NodeSet is not mutable!");
this.addElement(n);
}
/**
* Same as setElementAt.
*
* @param node The node to be set.
* @param index The index of the node to be replaced.
* @throws RuntimeException thrown if this NodeSetDTM is not of
* a mutable type.
*/
public void setItem(int node, int index)
{
if (!m_mutable)
throw new RuntimeException(XSLMessages.createXPATHMessage(XPATHErrorResources.ER_NODESETDTM_NOT_MUTABLE, null)); //"This NodeSetDTM is not mutable!");
super.setElementAt(node, index);
}
/**
* This function is used to fixup variables from QNames to stack frame
* indexes at stylesheet build time.
* @param vars List of QNames that correspond to variables. This list
* should be searched backwards for the first qualified name that
* corresponds to the variable reference qname. The position of the
* QName in the vector from the start of the vector will be its position
* in the stack frame (but variables above the globalsTop value will need
* to be offset to the current stack frame).
*/
public void fixupVariables(java.util.Vector vars, int globalsSize)
{
m_fixUpWasCalled = true;
int sz = vars.size();
for (int i = vars.size()-1; i >= 0; i--)
{
QName qn = (QName)vars.elementAt(i);
// System.out.println("qn: "+qn);
if(qn.equals(m_qname))
{
if(i < globalsSize)
{
m_isGlobal = true;
m_index = i;
}
else
{
m_index = i-globalsSize;
}
return;
}
}
java.lang.String msg = XSLMessages.createXPATHMessage(XPATHErrorResources.ER_COULD_NOT_FIND_VAR,
new Object[]{m_qname.toString()});
TransformerException te = new TransformerException(msg, this);
throw new com.sun.org.apache.xml.internal.utils.WrappedRuntimeException(te);
}
/**
* Tell the user of an assertion error, and probably throw an
* exception.
*
* @param b If false, a runtime exception will be thrown.
* @param msg The assertion message, which should be informative.
*
* @throws RuntimeException if the b argument is false.
*
* @throws javax.xml.transform.TransformerException
*/
public void assertion(boolean b, java.lang.String msg)
{
if (!b)
{
java.lang.String fMsg = XSLMessages.createXPATHMessage(
XPATHErrorResources.ER_INCORRECT_PROGRAMMER_ASSERTION,
new Object[]{ msg });
throw new RuntimeException(fMsg);
}
}
private Object getResultAsType( XObject resultObject, QName returnType )
throws javax.xml.transform.TransformerException {
// XPathConstants.STRING
if ( returnType.equals( XPathConstants.STRING ) ) {
return resultObject.str();
}
// XPathConstants.NUMBER
if ( returnType.equals( XPathConstants.NUMBER ) ) {
return new Double ( resultObject.num());
}
// XPathConstants.BOOLEAN
if ( returnType.equals( XPathConstants.BOOLEAN ) ) {
return new Boolean( resultObject.bool());
}
// XPathConstants.NODESET ---ORdered, UNOrdered???
if ( returnType.equals( XPathConstants.NODESET ) ) {
return resultObject.nodelist();
}
// XPathConstants.NODE
if ( returnType.equals( XPathConstants.NODE ) ) {
NodeIterator ni = resultObject.nodeset();
//Return the first node, or null
return ni.nextNode();
}
// If isSupported check is already done then the execution path
// shouldn't come here. Being defensive
String fmsg = XSLMessages.createXPATHMessage(
XPATHErrorResources.ER_UNSUPPORTED_RETURN_TYPE,
new Object[] { returnType.toString()});
throw new IllegalArgumentException ( fmsg );
}
/**
* Construct a XNodeSet object.
*
* @param val String object this will wrap.
*/
private XStringForFSB(String val)
{
super(val);
throw new IllegalArgumentException(
XSLMessages.createXPATHMessage(XPATHErrorResources.ER_FSB_CANNOT_TAKE_STRING, null)); // "XStringForFSB can not take a string for an argument!");
}
/**
* Set the current position in the node set.
* @param i Must be a valid index.
* @throws RuntimeException thrown if this NodeSet is not of
* a cached type, and thus doesn't permit indexed access.
*/
public void setCurrentPos(int i)
{
if (!m_cacheNodes)
throw new RuntimeException(
XSLMessages.createXPATHMessage(XPATHErrorResources.ER_NODESET_CANNOT_INDEX, null)); //"This NodeSet can not do indexing or counting functions!");
m_next = i;
}
/**
* Constructs and throws a WrongNumberArgException with the appropriate
* message for this function object. This class supports an arbitrary
* number of arguments, so this method must never be called.
*
* @throws WrongNumberArgsException
*/
protected void reportWrongNumberArgs() throws WrongNumberArgsException {
String fMsg = XSLMessages.createXPATHMessage(
XPATHErrorResources.ER_INCORRECT_PROGRAMMER_ASSERTION,
new Object[]{ "Programmer's assertion: the method FunctionMultiArgs.reportWrongNumberArgs() should never be called." });
throw new RuntimeException(fMsg);
}
/**
* Construct a XNodeSet object.
*
* @param val String object this will wrap.
*/
private XStringForChars(String val)
{
super(val);
throw new IllegalArgumentException(
XSLMessages.createXPATHMessage(XPATHErrorResources.ER_XSTRINGFORCHARS_CANNOT_TAKE_STRING, null)); //"XStringForChars can not take a string for an argument!");
}