OpenJDK 1.23 · com.sun.org.apache.xpath.internal.Expression

Modifier and Type	Field and Description
private ExpressionNode	m_parent The location where this expression was built from.
pack-priv static final long	serialVersionUID

Access	Constructor and Description
public	Expression()

Method Summary

Modifier and Type	Method and Description
public DTMIterator	Returns: A valid DTMIterator. asIterator(XPathContext The execution context. xctxt, int The node that "." expresses. contextNode) Given an select expression and a context, evaluate the XPath and return the resulting iterator.
public DTMIterator	Returns: A valid DTMIterator. asIteratorRaw(XPathContext The execution context. xctxt, int The node that "." expresses. contextNode) Given an select expression and a context, evaluate the XPath and return the resulting iterator, but do not clone.
public int	Returns: the first node out of the nodeset, or DTM.NULL. asNode(XPathContext The XPath runtime context. xctxt) Return the first node out of the nodeset, if this expression is a nodeset expression.
public void	assertion(boolean If false, a runtime exception will be thrown. b, String The assertion message, which should be informative. msg) Tell the user of an assertion error, and probably throw an exception.
public boolean	Returns: false bool(XPathContext The XPath runtime context. xctxt) Evaluate expression to a boolean.
public boolean	Returns: true if traversal outside the context node's subtree can occur. canTraverseOutsideSubtree() Tell if this expression or it's subexpressions can traverse outside the current subtree.
public abstract boolean	Returns: true if this objects class and the expr object's class are the same, and the data contained within both objects are considered equal. deepEquals(Expression Another expression object. expr) Compare this object with another object and see if they are equal, include the sub heararchy.
public void	error(XPathContext The XPath runtime context. xctxt, String An error msgkey that corresponds to one of the constants found in `com.sun.org.apache.xpath.internal.res.XPATHErrorResources`, which is a key for a format string. msg, Object[] An array of arguments represented in the format string, which may be null. args) Tell the user of an error, and probably throw an exception.
public XObject	Returns: The result of the expression in the form of a `XObject`. execute(XPathContext The XPath runtime context. xctxt, int The currentNode. currentNode) Execute an expression in the XPath runtime context, and return the result of the expression.
public XObject	Returns: The result of the expression in the form of a `XObject`. execute(XPathContext The XPath runtime context. xctxt, int The currentNode. currentNode, DTM The DTM of the current node. dtm, int The expanded type ID of the current node. expType) Execute an expression in the XPath runtime context, and return the result of the expression.
public abstract XObject	Returns: The result of the expression in the form of a `XObject`. execute(XPathContext The XPath runtime context. xctxt) Execute an expression in the XPath runtime context, and return the result of the expression.
public XObject	Returns: The result of the expression in the form of a `XObject`. execute(XPathContext The XPath runtime context. xctxt, boolean true if a "safe" object doesn't need to be returned. destructiveOK) Execute an expression in the XPath runtime context, and return the result of the expression, but tell that a "safe" object doesn't have to be returned.
public void	Returns: The result of the expression in the form of a `XObject`. executeCharsToContentHandler(XPathContext The XPath runtime context. NEEDSDOC @param handler xctxt, ContentHandler handler) Execute an expression in the XPath runtime context, and return the result of the expression.
public void	exprAddChild(ExpressionNode n, int i) Implements com.sun.org.apache.xpath.internal.ExpressionNode.exprAddChild. This method tells the node to add its argument to the node's list of children.
public ExpressionNode	exprGetChild(int i) Implements com.sun.org.apache.xpath.internal.ExpressionNode.exprGetChild. This method returns a child node.
public int	exprGetNumChildren() Implements com.sun.org.apache.xpath.internal.ExpressionNode.exprGetNumChildren. Return the number of children the node has.
public ExpressionNode	exprGetParent() Implements com.sun.org.apache.xpath.internal.ExpressionNode.exprGetParent.
public void	exprSetParent(ExpressionNode n) Implements com.sun.org.apache.xpath.internal.ExpressionNode.exprSetParent. This pair of methods are used to inform the node of its parent.
public abstract void	fixupVariables(List<QName> 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). NEEDSDOC @param globalsSize vars, int globalsSize) This function is used to fixup variables from QNames to stack frame indexes at stylesheet build time.
public int	Returns: The column number, or -1 if none is available. getColumnNumber() Implements javax.xml.transform.SourceLocator.getColumnNumber. Return the character position where the current document event ends.
public ExpressionNode	Returns: null or first ancestor that is not an Expression. getExpressionOwner() Get the first non-Expression parent of this node.
public int	Returns: The line number, or -1 if none is available. getLineNumber() Implements javax.xml.transform.SourceLocator.getLineNumber. Return the line number where the current document event ends.
public String	Returns: A string containing the public identifier, or null if none is available. getPublicId() Implements javax.xml.transform.SourceLocator.getPublicId. Return the public identifier for the current document event.
public String	Returns: A string containing the system identifier, or null if none is available. getSystemId() Implements javax.xml.transform.SourceLocator.getSystemId. Return the system identifier for the current document event.
public boolean	Returns: true if the expression can be represented as a nodeset. isNodesetExpr() Tell if the expression is a nodeset expression.
protected final boolean	Returns: true of the passed in class is the exact same class as this class. isSameClass(Expression expr) This is a utility method to tell if the passed in class is the same class as this.
public boolean	Returns: true if the expression represents a stable number. isStableNumber() Tell if this expression returns a stable number that will not change during iterations within the expression.
public double	Returns: The expression evaluated as a double. num(XPathContext The XPath runtime context. xctxt) Evaluate expression to a number.
public void	warn(XPathContext The XPath runtime context. xctxt, String An error msgkey that corresponds to one of the conststants found in `com.sun.org.apache.xpath.internal.res.XPATHErrorResources`, which is a key for a format string. msg, Object[] An array of arguments represented in the format string, which may be null. args) Warn the user of an problem.
public XMLString	Returns: The string this wraps or the empty string if null xstr(XPathContext The XPath runtime context. xctxt) Cast result object to a string.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

m_parent	back to summary
private ExpressionNode m_parent The location where this expression was built from. Need for diagnostic messages. May be null. Annotations @SuppressWarnings:serial

serialVersionUID	back to summary
pack-priv static final long serialVersionUID

Expression	back to summary
public Expression()

Method Detail

asIterator	back to summary
public DTMIterator asIterator(XPathContext xctxt, int contextNode) throws TransformerException Given an select expression and a context, evaluate the XPath and return the resulting iterator. Parameters xctxt:XPathContext The execution context. contextNode:int The node that "." expresses. Returns:DTMIterator A valid DTMIterator. Exceptions TransformerException: thrown if the active ProblemListener decides the error condition is severe enough to halt processing.

asIterator

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public DTMIterator asIterator(XPathContext xctxt, int contextNode) throws TransformerException

Given an select expression and a context, evaluate the XPath and return the resulting iterator.

Parameters

xctxt:XPathContext: The execution context.
contextNode:int: The node that "." expresses.

Returns:DTMIterator

A valid DTMIterator.

Exceptions

TransformerException:: thrown if the active ProblemListener decides the error condition is severe enough to halt processing.

asIteratorRaw	back to summary
public DTMIterator asIteratorRaw(XPathContext xctxt, int contextNode) throws TransformerException Given an select expression and a context, evaluate the XPath and return the resulting iterator, but do not clone. Parameters xctxt:XPathContext The execution context. contextNode:int The node that "." expresses. Returns:DTMIterator A valid DTMIterator. Exceptions TransformerException: thrown if the active ProblemListener decides the error condition is severe enough to halt processing.

asIteratorRaw

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public DTMIterator asIteratorRaw(XPathContext xctxt, int contextNode) throws TransformerException

Given an select expression and a context, evaluate the XPath and return the resulting iterator, but do not clone.

Parameters

xctxt:XPathContext: The execution context.
contextNode:int: The node that "." expresses.

Returns:DTMIterator

A valid DTMIterator.

Exceptions

TransformerException:: thrown if the active ProblemListener decides the error condition is severe enough to halt processing.

asNode	back to summary
public int asNode(XPathContext xctxt) throws TransformerException Return the first node out of the nodeset, if this expression is a nodeset expression. Parameters xctxt:XPathContext The XPath runtime context. Returns:int the first node out of the nodeset, or DTM.NULL.

asNode

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public int asNode(XPathContext xctxt) throws TransformerException

Return the first node out of the nodeset, if this expression is a nodeset expression.

Parameters

xctxt:XPathContext: The XPath runtime context.

Returns:int

the first node out of the nodeset, or DTM.NULL.

assertion	back to summary
public void assertion(boolean b, String msg) Tell the user of an assertion error, and probably throw an exception. Parameters b:boolean If false, a runtime exception will be thrown. msg:String The assertion message, which should be informative. Exceptions RuntimeException: if the b argument is false.

assertion

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public void assertion(boolean b, String msg)

Tell the user of an assertion error, and probably throw an exception.

Parameters

b:boolean: If false, a runtime exception will be thrown.
msg:String: The assertion message, which should be informative.

Exceptions

RuntimeException:: if the b argument is false.

bool	back to summary
public boolean bool(XPathContext xctxt) throws TransformerException Evaluate expression to a boolean. Parameters xctxt:XPathContext The XPath runtime context. Returns:boolean false

bool

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public boolean bool(XPathContext xctxt) throws TransformerException

Evaluate expression to a boolean.

Parameters

xctxt:XPathContext: The XPath runtime context.

Returns:boolean

false

canTraverseOutsideSubtree	back to summary
public boolean canTraverseOutsideSubtree() Tell if this expression or it's subexpressions can traverse outside the current subtree. Returns:boolean true if traversal outside the context node's subtree can occur.

canTraverseOutsideSubtree

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public boolean canTraverseOutsideSubtree()

Tell if this expression or it's subexpressions can traverse outside the current subtree.

Returns:boolean: true if traversal outside the context node's subtree can occur.

deepEquals	back to summary
public abstract boolean deepEquals(Expression expr) Compare this object with another object and see if they are equal, include the sub heararchy. Parameters expr:Expression Another expression object. Returns:boolean true if this objects class and the expr object's class are the same, and the data contained within both objects are considered equal.

deepEquals

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public abstract boolean deepEquals(Expression expr)

Compare this object with another object and see if they are equal, include the sub heararchy.

Parameters

expr:Expression: Another expression object.

Returns:boolean

true if this objects class and the expr object's class are the same, and the data contained within both objects are considered equal.

error back to summary

error	back to summary
public void error(XPathContext xctxt, String msg, Object[] args) throws TransformerException Tell the user of an error, and probably throw an exception. Parameters xctxt:XPathContext The XPath runtime context. msg:String An error msgkey that corresponds to one of the constants found in `com.sun.org.apache.xpath.internal.res.XPATHErrorResources`, which is a key for a format string. args:Object[] An array of arguments represented in the format string, which may be null. Exceptions TransformerException: if the current ErrorListoner determines to throw an exception.

public void error(XPathContext xctxt, String msg, Object[] args) throws TransformerException

Tell the user of an error, and probably throw an exception.

Parameters

xctxt:XPathContext: The XPath runtime context.
msg:String: An error msgkey that corresponds to one of the constants found in com.sun.org.apache.xpath.internal.res.XPATHErrorResources, which is a key for a format string.
args:Object[]: An array of arguments represented in the format string, which may be null.

Exceptions

TransformerException:: if the current ErrorListoner determines to throw an exception.

execute back to summary

execute	back to summary
public XObject execute(XPathContext xctxt, int currentNode) throws TransformerException Execute an expression in the XPath runtime context, and return the result of the expression. Parameters xctxt:XPathContext The XPath runtime context. currentNode:int The currentNode. Returns:XObject The result of the expression in the form of a `XObject`. Exceptions TransformerException: if a runtime exception occurs.

public XObject execute(XPathContext xctxt, int currentNode) throws TransformerException

Execute an expression in the XPath runtime context, and return the result of the expression.

Parameters

xctxt:XPathContext: The XPath runtime context.
currentNode:int: The currentNode.

Returns:XObject

The result of the expression in the form of a XObject.

Exceptions

TransformerException:: if a runtime exception occurs.

execute back to summary

execute	back to summary
public XObject execute(XPathContext xctxt, int currentNode, DTM dtm, int expType) throws TransformerException Execute an expression in the XPath runtime context, and return the result of the expression. Parameters xctxt:XPathContext The XPath runtime context. currentNode:int The currentNode. dtm:DTM The DTM of the current node. expType:int The expanded type ID of the current node. Returns:XObject The result of the expression in the form of a `XObject`. Exceptions TransformerException: if a runtime exception occurs.

public XObject execute(XPathContext xctxt, int currentNode, DTM dtm, int expType) throws TransformerException

Execute an expression in the XPath runtime context, and return the result of the expression.

Parameters

xctxt:XPathContext: The XPath runtime context.
currentNode:int: The currentNode.
dtm:DTM: The DTM of the current node.
expType:int: The expanded type ID of the current node.

Returns:XObject

The result of the expression in the form of a XObject.

Exceptions

TransformerException:: if a runtime exception occurs.

execute back to summary

execute	back to summary
public abstract XObject execute(XPathContext xctxt) throws TransformerException Execute an expression in the XPath runtime context, and return the result of the expression. Parameters xctxt:XPathContext The XPath runtime context. Returns:XObject The result of the expression in the form of a `XObject`. Exceptions TransformerException: if a runtime exception occurs.

public abstract XObject execute(XPathContext xctxt) throws TransformerException

Execute an expression in the XPath runtime context, and return the result of the expression.

Parameters

xctxt:XPathContext: The XPath runtime context.

Returns:XObject

The result of the expression in the form of a XObject.

Exceptions

TransformerException:: if a runtime exception occurs.

execute back to summary

execute	back to summary
public XObject execute(XPathContext xctxt, boolean destructiveOK) throws TransformerException Execute an expression in the XPath runtime context, and return the result of the expression, but tell that a "safe" object doesn't have to be returned. The default implementation just calls execute(xctxt). Parameters xctxt:XPathContext The XPath runtime context. destructiveOK:boolean true if a "safe" object doesn't need to be returned. Returns:XObject The result of the expression in the form of a `XObject`. Exceptions TransformerException: if a runtime exception occurs.

public XObject execute(XPathContext xctxt, boolean destructiveOK) throws TransformerException

Execute an expression in the XPath runtime context, and return the result of the expression, but tell that a "safe" object doesn't have to be returned. The default implementation just calls execute(xctxt).

Parameters

xctxt:XPathContext: The XPath runtime context.
destructiveOK:boolean: true if a "safe" object doesn't need to be returned.

Returns:XObject

The result of the expression in the form of a XObject.

Exceptions

TransformerException:: if a runtime exception occurs.

executeCharsToContentHandler back to summary

executeCharsToContentHandler	back to summary
public void executeCharsToContentHandler(XPathContext xctxt, ContentHandler handler) throws TransformerException, SAXException Execute an expression in the XPath runtime context, and return the result of the expression. Parameters xctxt:XPathContext The XPath runtime context. NEEDSDOC @param handler Returns:void The result of the expression in the form of a `XObject`. Exceptions TransformerException: if a runtime exception occurs.

public void executeCharsToContentHandler(XPathContext xctxt, ContentHandler handler) throws TransformerException, SAXException

Execute an expression in the XPath runtime context, and return the result of the expression.

Parameters

xctxt:XPathContext: The XPath runtime context. NEEDSDOC @param handler

Returns:void

The result of the expression in the form of a XObject.

Exceptions

TransformerException:: if a runtime exception occurs.

exprAddChild	back to summary
public void exprAddChild(ExpressionNode n, int i) Implements com.sun.org.apache.xpath.internal.ExpressionNode.exprAddChild. This method tells the node to add its argument to the node's list of children.

exprAddChild

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public void exprAddChild(ExpressionNode n, int i)

Implements com.sun.org.apache.xpath.internal.ExpressionNode.exprAddChild.

This method tells the node to add its argument to the node's list of children.

exprGetChild	back to summary
public ExpressionNode exprGetChild(int i) Implements com.sun.org.apache.xpath.internal.ExpressionNode.exprGetChild. This method returns a child node. The children are numbered from zero, left to right.

exprGetChild

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public ExpressionNode exprGetChild(int i)

Implements com.sun.org.apache.xpath.internal.ExpressionNode.exprGetChild.

This method returns a child node. The children are numbered from zero, left to right.

exprGetNumChildren	back to summary
public int exprGetNumChildren() Implements com.sun.org.apache.xpath.internal.ExpressionNode.exprGetNumChildren. Return the number of children the node has.

exprGetNumChildren

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public int exprGetNumChildren()

Implements com.sun.org.apache.xpath.internal.ExpressionNode.exprGetNumChildren.

Return the number of children the node has.

exprGetParent	back to summary
public ExpressionNode exprGetParent() Implements com.sun.org.apache.xpath.internal.ExpressionNode.exprGetParent.

exprSetParent	back to summary
public void exprSetParent(ExpressionNode n) Implements com.sun.org.apache.xpath.internal.ExpressionNode.exprSetParent. This pair of methods are used to inform the node of its parent.

exprSetParent

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public void exprSetParent(ExpressionNode n)

Implements com.sun.org.apache.xpath.internal.ExpressionNode.exprSetParent.

This pair of methods are used to inform the node of its parent.

fixupVariables	back to summary
public abstract void fixupVariables(List<QName> vars, int globalsSize) This function is used to fixup variables from QNames to stack frame indexes at stylesheet build time. Parameters vars:List<QName> 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). NEEDSDOC @param globalsSize

fixupVariables

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public abstract void fixupVariables(List<QName> vars, int globalsSize)

This function is used to fixup variables from QNames to stack frame indexes at stylesheet build time.

Parameters

vars:List<QName>: 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). NEEDSDOC @param globalsSize

getColumnNumber back to summary

getColumnNumber	back to summary
public int getColumnNumber() Implements javax.xml.transform.SourceLocator.getColumnNumber. Return the character position where the current document event ends. Warning The return value from the method is intended only as an approximation for the sake of error reporting; it is not intended to provide sufficient information to edit the character content of the original XML document. The return value is an approximation of the column number in the document entity or external parsed entity where the markup that triggered the event appears. Returns:int The column number, or -1 if none is available. See Also `getLineNumber`

public int getColumnNumber()

Implements javax.xml.transform.SourceLocator.getColumnNumber.

Return the character position where the current document event ends.

Warning

The return value from the method is intended only as an approximation for the sake of error reporting; it is not intended to provide sufficient information to edit the character content of the original XML document.

The return value is an approximation of the column number in the document entity or external parsed entity where the markup that triggered the event appears.

Returns:int: The column number, or -1 if none is available.
See Also: getLineNumber

getExpressionOwner	back to summary
public ExpressionNode getExpressionOwner() Get the first non-Expression parent of this node. Returns:ExpressionNode null or first ancestor that is not an Expression.

getExpressionOwner

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public ExpressionNode getExpressionOwner()

Get the first non-Expression parent of this node.

Returns:ExpressionNode: null or first ancestor that is not an Expression.

getLineNumber back to summary

getLineNumber	back to summary
public int getLineNumber() Implements javax.xml.transform.SourceLocator.getLineNumber. Return the line number where the current document event ends. Warning The return value from the method is intended only as an approximation for the sake of error reporting; it is not intended to provide sufficient information to edit the character content of the original XML document. The return value is an approximation of the line number in the document entity or external parsed entity where the markup that triggered the event appears. Returns:int The line number, or -1 if none is available. See Also `getColumnNumber`

public int getLineNumber()

Implements javax.xml.transform.SourceLocator.getLineNumber.

Return the line number where the current document event ends.

Warning

The return value is an approximation of the line number in the document entity or external parsed entity where the markup that triggered the event appears.

Returns:int: The line number, or -1 if none is available.
See Also: getColumnNumber

getPublicId back to summary

getPublicId	back to summary
public String getPublicId() Implements javax.xml.transform.SourceLocator.getPublicId. Return the public identifier for the current document event. The return value is the public identifier of the document entity or of the external parsed entity in which the markup that triggered the event appears. Returns:String A string containing the public identifier, or null if none is available. See Also `getSystemId`

public String getPublicId()

Implements javax.xml.transform.SourceLocator.getPublicId.

Return the public identifier for the current document event.

The return value is the public identifier of the document entity or of the external parsed entity in which the markup that triggered the event appears.

Returns:String: A string containing the public identifier, or null if none is available.
See Also: getSystemId

getSystemId back to summary

getSystemId	back to summary
public String getSystemId() Implements javax.xml.transform.SourceLocator.getSystemId. Return the system identifier for the current document event. The return value is the system identifier of the document entity or of the external parsed entity in which the markup that triggered the event appears. If the system identifier is a URL, the parser must resolve it fully before passing it to the application. Returns:String A string containing the system identifier, or null if none is available. See Also `getPublicId`

public String getSystemId()

Implements javax.xml.transform.SourceLocator.getSystemId.

Return the system identifier for the current document event.

The return value is the system identifier of the document entity or of the external parsed entity in which the markup that triggered the event appears.

If the system identifier is a URL, the parser must resolve it fully before passing it to the application.

Returns:String: A string containing the system identifier, or null if none is available.
See Also: getPublicId

isNodesetExpr back to summary

isNodesetExpr	back to summary
public boolean isNodesetExpr() Tell if the expression is a nodeset expression. In other words, tell if you can execute `asNode` without an exception. Returns:boolean true if the expression can be represented as a nodeset.

public boolean isNodesetExpr()

Tell if the expression is a nodeset expression. In other words, tell if you can execute asNode without an exception.

Returns:boolean: true if the expression can be represented as a nodeset.

isSameClass	back to summary
protected final boolean isSameClass(Expression expr) This is a utility method to tell if the passed in class is the same class as this. It is to be used by the deepEquals method. I'm bottlenecking it here because I'm not totally confident that comparing the class objects is the best way to do this. Returns:boolean true of the passed in class is the exact same class as this class.

isSameClass

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protected final boolean isSameClass(Expression expr)

This is a utility method to tell if the passed in class is the same class as this. It is to be used by the deepEquals method. I'm bottlenecking it here because I'm not totally confident that comparing the class objects is the best way to do this.

Returns:boolean: true of the passed in class is the exact same class as this class.

isStableNumber	back to summary
public boolean isStableNumber() Tell if this expression returns a stable number that will not change during iterations within the expression. This is used to determine if a proximity position predicate can indicate that no more searching has to occur. Returns:boolean true if the expression represents a stable number.

isStableNumber

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public boolean isStableNumber()

Tell if this expression returns a stable number that will not change during iterations within the expression. This is used to determine if a proximity position predicate can indicate that no more searching has to occur.

Returns:boolean: true if the expression represents a stable number.

num	back to summary
public double num(XPathContext xctxt) throws TransformerException Evaluate expression to a number. Parameters xctxt:XPathContext The XPath runtime context. Returns:double The expression evaluated as a double.

num

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public double num(XPathContext xctxt) throws TransformerException

Evaluate expression to a number.

Parameters

xctxt:XPathContext: The XPath runtime context.

Returns:double

The expression evaluated as a double.

warn back to summary

warn	back to summary
public void warn(XPathContext xctxt, String msg, Object[] args) throws TransformerException Warn the user of an problem. Parameters xctxt:XPathContext The XPath runtime context. msg:String An error msgkey that corresponds to one of the conststants found in `com.sun.org.apache.xpath.internal.res.XPATHErrorResources`, which is a key for a format string. args:Object[] An array of arguments represented in the format string, which may be null. Exceptions TransformerException: if the current ErrorListoner determines to throw an exception.

public void warn(XPathContext xctxt, String msg, Object[] args) throws TransformerException

Warn the user of an problem.

Parameters

xctxt:XPathContext: The XPath runtime context.
msg:String: An error msgkey that corresponds to one of the conststants found in com.sun.org.apache.xpath.internal.res.XPATHErrorResources, which is a key for a format string.
args:Object[]: An array of arguments represented in the format string, which may be null.

Exceptions

TransformerException:: if the current ErrorListoner determines to throw an exception.

xstr	back to summary
public XMLString xstr(XPathContext xctxt) throws TransformerException Cast result object to a string. Parameters xctxt:XPathContext The XPath runtime context. Returns:XMLString The string this wraps or the empty string if null

xstr

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public XMLString xstr(XPathContext xctxt) throws TransformerException

Cast result object to a string.

Parameters

xctxt:XPathContext: The XPath runtime context.

Returns:XMLString

The string this wraps or the empty string if null

public abstract Class Expression

Field Summary

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Field Detail

Constructor Detail

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