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java.lang.Object
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+--com.icl.saxon.expr.Expression
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+--com.icl.saxon.expr.AttributeValueTemplate
This class represents an attribute value template. Although it is not technically an expression in the sense of XSL syntax, we model it as an expression for inheritance purposes.
| Fields inherited from class com.icl.saxon.expr.Expression |
emptyVector, staticContext |
| Constructor Summary | |
AttributeValueTemplate()
Constructor to make an AVT with an empty component list |
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AttributeValueTemplate(Expression exp)
Constructor to make an AVT with single Expression component |
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AttributeValueTemplate(java.lang.String s)
Constructor to make an AVT with single String component |
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AttributeValueTemplate(java.util.Vector components)
Constructor to make an AVT from a list of components. |
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| Method Summary | |
Value |
evaluate(Context context)
Evaluate an AVT. |
java.lang.String |
evaluateAsString(Context context)
Evaluate an expression as a String. |
java.util.Vector |
getComponents()
Get components of the AVT |
int |
getDataType()
Determine the data type of the exprssion, if possible |
int |
getDependencies()
Determine which aspects of the context the expression depends on. |
static Expression |
make(java.lang.String avt)
Static factory method to create an AVT from an XSLT string representation, using a dummy static context |
static Expression |
make(java.lang.String avt,
StaticContext env)
Static factory method to create an AVT from an XSL string representation |
Expression |
reduce(int dependencies,
Context context)
Perform a partial evaluation of the expression, by eliminating specified dependencies on the context. |
Expression |
simplify()
Simplify an expression. |
| Methods inherited from class com.icl.saxon.expr.Expression |
containsReferences, enumerate, evaluateAsBoolean, evaluateAsNodeSet, evaluateAsNumber, getStaticContext, isNumeric, isRelative, setStaticContext, usesCurrent |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
public AttributeValueTemplate(java.util.Vector components)
public AttributeValueTemplate()
public AttributeValueTemplate(java.lang.String s)
public AttributeValueTemplate(Expression exp)
| Method Detail |
public static Expression make(java.lang.String avt,
StaticContext env)
throws org.xml.sax.SAXException
com.icl.saxon.expr.Expressionexpression - The expression (as a character string)env - An object giving information about the compile-time context of the expression
public static Expression make(java.lang.String avt)
throws org.xml.sax.SAXException
com.icl.saxon.expr.Expressionexpression - The expression (as a character string)env - An object giving information about the compile-time context of the expressionpublic java.util.Vector getComponents()
public Expression simplify()
throws org.xml.sax.SAXException
simplify in class Expression
public Value evaluate(Context context)
throws org.xml.sax.SAXException
evaluate in class Expressioncontext - The context in which the AVT is to be evaluatedpublic int getDataType()
getDataType in class Expression
public java.lang.String evaluateAsString(Context context)
throws org.xml.sax.SAXException
evaluateAsString in class Expressioncontext - The context in which the expression is to be evaluatedpublic int getDependencies()
getDependencies in class Expression
public Expression reduce(int dependencies,
Context context)
throws org.xml.sax.SAXException
reduce in class Expressiondependencies - The dependencies to be removedcontext - The context to be used for the partial evaluation
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