net.sf.saxon.instruct
Class GlobalVariable
java.lang.Object
net.sf.saxon.expr.ComputedExpression
net.sf.saxon.instruct.Instruction
net.sf.saxon.instruct.GeneralVariable
net.sf.saxon.instruct.GlobalVariable
- All Implemented Interfaces:
- Binding, Container, Expression, InstructionInfoProvider, java.io.Serializable, javax.xml.transform.SourceLocator
- Direct Known Subclasses:
- GlobalParam
- public class GlobalVariable
- extends GeneralVariable
- implements Container
Handler for global variables in a stylesheet or query.
- See Also:
- Serialized Form
Methods inherited from class net.sf.saxon.instruct.GeneralVariable |
analyze, display, evaluateItem, getCardinality, getInstructionNameCode, getItemType, getNameCode, getRequiredType, getSelectExpression, getSlotNumber, getVariableFingerprint, getVariableName, init, isAssignable, isRequiredParam, isTunnelParam, iterate, iterateSubExpressions, promoteInst, setAssignable, setNameCode, setRequiredParam, setRequiredType, setSelectExpression, setSlotNumber, setTunnel, setVariableName, simplify |
Methods inherited from class net.sf.saxon.instruct.Instruction |
appendItem, assembleParams, assembleTunnelParams, computeCardinality, computeSpecialProperties, createsNewNodes, dynamicError, dynamicError, effectiveBooleanValue, evaluateAsString, getImplementationMethod, getSourceLocator, isXSLT, process, promote |
Methods inherited from class net.sf.saxon.expr.ComputedExpression |
adoptChildExpression, checkPermittedContents, computeDependencies, computeStaticProperties, dynamicError, dynamicError, getColumnNumber, getConstructType, getDependencies, getIntrinsicDependencies, getLineNumber, getLocationId, getParentExpression, getPublicId, getSpecialProperties, getSystemId, markTailFunctionCalls, resetStaticProperties, setLocationId, setParentExpression, typeError, typeError |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface javax.xml.transform.SourceLocator |
getColumnNumber, getLineNumber, getPublicId, getSystemId |
GlobalVariable
public GlobalVariable()
getExecutable
public Executable getExecutable()
- Description copied from interface:
Container
- Get the Executable (representing a complete stylesheet or query) of which this Container forms part
- Specified by:
getExecutable
in interface Container
- Overrides:
getExecutable
in class ComputedExpression
setExecutable
public void setExecutable(Executable executable)
setContainsLocals
public void setContainsLocals(SlotManager map)
isGlobal
public boolean isGlobal()
- Description copied from interface:
Binding
- Indicate whether the binding is local or global. A global binding is one that has a fixed
value for the life of a query or transformation; any other binding is local.
- Specified by:
isGlobal
in interface Binding
- Overrides:
isGlobal
in class GeneralVariable
processLeavingTail
public TailCall processLeavingTail(XPathContext context)
throws XPathException
- Process the variable declaration
- Specified by:
processLeavingTail
in class Instruction
- Parameters:
context
- The dynamic context of the transformation, giving access to the current node,
the current variables, etc.
- Returns:
- null if the instruction has completed execution; or a TailCall indicating
a function call or template call that is delegated to the caller, to be made after the stack has
been unwound so as to save stack space.
- Throws:
XPathException
getSelectValue
public ValueRepresentation getSelectValue(XPathContext context)
throws XPathException
- Evaluate the variable. That is,
get the value of the select expression if present or the content
of the element otherwise, either as a tree or as a sequence
- Overrides:
getSelectValue
in class GeneralVariable
- Throws:
XPathException
evaluateVariable
public ValueRepresentation evaluateVariable(XPathContext context)
throws XPathException
- Evaluate the variable
- Specified by:
evaluateVariable
in interface Binding
- Throws:
XPathException
getInstructionInfo
public InstructionInfo getInstructionInfo()
- Get InstructionInfo for this expression
- Specified by:
getInstructionInfo
in interface InstructionInfoProvider
- Overrides:
getInstructionInfo
in class Instruction