Package net.sf.saxon.trace
Class Location
- java.lang.Object
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- net.sf.saxon.trace.Location
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public class Location extends java.lang.Object
This class holds constants identifying different kinds of location in a source stylesheet or query. These constants are used in the getConstructType() method of class InstructionInfo. Some of these locations represent points where the dynamic context changes, and they are therefore recorded as such on the context stack. Some of the locations represent points in the evaluation of a stylesheet (or query or XPath expression) that are notified to the trace listener. Some fulfil both roles.Any constant used in
StandardNames
can be used as a Location. Such names are generally used to identify XSLT instructions. They are also used for equivalent constructs in XQuery, for example XSL_ELEMENT is used for a computed element constructor in XQuery. The constants in StandardNames are all in the range 0-1023, so constants defined in this class are outside this range.The constants in this file are annotated with Q to indicate they can appear in XQuery trace output, T to indicate they can appear in XSLT trace output, and/or C to indicate that they can appear on the dynamic context stack.
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Field Summary
Fields Modifier and Type Field Description static int
BUILT_IN_TEMPLATE
An XSLT built-in template rule.static int
CASE_EXPRESSION
CASE clause within "typeswitch".static int
CLAUSE_BASE
Values of the form CLAUSE_BASE + n represent FLWOR clausesstatic int
CONTROLLER
The outer system environment, identified as the caller of a user query or stylesheet.static int
COPY_MODIFY_EXPRESSION
An XQuery Update copy-modify (transform) expression.static int
DEFAULT_EXPRESSION
DEFAULT clause within "typeswitch".static int
DELETE_EXPRESSION
An XPath or XQuery delete expression.static int
ELSE_EXPRESSION
An XPath or XQuery "else" clause.static int
EXTENSION_INSTRUCTION
An XSLT instruction.static int
FOR_EXPRESSION
An XPath or XQuery "for" clause.static int
FUNCTION
A function declaration in XSLT or XQuerystatic int
FUNCTION_CALL
An XPath function call to a user-defined function.static int
IF_EXPRESSION
An XPath or XQuery "if" expression.static int
INSERT_EXPRESSION
An XQuery Update insert expression.static int
LAZY_EVALUATION
Lazy evaluation of an expression (this code is used to identify a context created as a saved copy of an existing context, to be stored in a Closure).static int
LET_EXPRESSION
An XQuery "let" clause, or an XSLT local variable (which compiles into a LET clause).static int
LITERAL_RESULT_ATTRIBUTE
An attribute of an XSLT literal result element or of an XQuery direct element constructor.static int
LITERAL_RESULT_ELEMENT
An XSLT literal result element, or an XQuery direct element constructor.static int
ORDER_BY_CLAUSE
An order-by clause in a FLWOR expression.static int
PATH_EXPRESSION
An XPath or XQuery path expression.static int
RENAME_EXPRESSION
An XPath or XQuery rename expression.static int
REPLACE_EXPRESSION
An XPath or XQuery replace expression.static int
RETURN_EXPRESSION
An XPath or XQuery "return" clause.static int
SAXON_EVALUATE
An XPath expression constructed dynamically using saxon:evaluate (or saxon:expression).static int
SWITCH_EXPRESSION
An XPath or XQuery "switch" expression.static int
TEMPLATE
An XSLT user-written template rule or named template.static int
THEN_EXPRESSION
An XPath or XQuery "then" clause.static int
TRACE_CALL
An explicit call of the fn:trace() function.static int
TYPESWITCH_EXPRESSION
An XPath or XQuery "typeswitch" expression.static int
UNCLASSIFIED
Unclassified location.static int
VALIDATE_EXPRESSION
An XPath or XQuery "validate" expression.static int
WHERE_CLAUSE
A WHERE clause in a FLWOR expression.static int
XPATH_EXPRESSION
XPath expression, otherwise unclassified.static int
XPATH_IN_XSLT
Entry point to a top-level XPath expression within an XSLT stylesheet.
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Field Detail
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CONTROLLER
public static final int CONTROLLER
The outer system environment, identified as the caller of a user query or stylesheet. Usage:C- See Also:
- Constant Field Values
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EXTENSION_INSTRUCTION
public static final int EXTENSION_INSTRUCTION
An XSLT instruction. The name of the instruction (which may be an extension instruction) can be obtained using the fingerprint property. Usage:T- See Also:
- Constant Field Values
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LITERAL_RESULT_ELEMENT
public static final int LITERAL_RESULT_ELEMENT
An XSLT literal result element, or an XQuery direct element constructor. Usage:QT- See Also:
- Constant Field Values
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LITERAL_RESULT_ATTRIBUTE
public static final int LITERAL_RESULT_ATTRIBUTE
An attribute of an XSLT literal result element or of an XQuery direct element constructor. Usage: QT- See Also:
- Constant Field Values
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TEMPLATE
public static final int TEMPLATE
An XSLT user-written template rule or named template. Usage: TC- See Also:
- Constant Field Values
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FUNCTION_CALL
public static final int FUNCTION_CALL
An XPath function call to a user-defined function. The "expression" property references the actual expression, of class ComputedExpression. The "target" property references the function being called, of class UserFunction. Usage: QTC- See Also:
- Constant Field Values
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BUILT_IN_TEMPLATE
public static final int BUILT_IN_TEMPLATE
An XSLT built-in template rule. Usage: TC- See Also:
- Constant Field Values
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XPATH_IN_XSLT
public static final int XPATH_IN_XSLT
Entry point to a top-level XPath expression within an XSLT stylesheet. Usage: TC- See Also:
- Constant Field Values
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FOR_EXPRESSION
public static final int FOR_EXPRESSION
An XPath or XQuery "for" clause. Usage: Q- See Also:
- Constant Field Values
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LET_EXPRESSION
public static final int LET_EXPRESSION
An XQuery "let" clause, or an XSLT local variable (which compiles into a LET clause). Usage: Q,T- See Also:
- Constant Field Values
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RETURN_EXPRESSION
public static final int RETURN_EXPRESSION
An XPath or XQuery "return" clause. Usage: Q- See Also:
- Constant Field Values
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IF_EXPRESSION
public static final int IF_EXPRESSION
An XPath or XQuery "if" expression. Usage: Q- See Also:
- Constant Field Values
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THEN_EXPRESSION
public static final int THEN_EXPRESSION
An XPath or XQuery "then" clause. Usage: Q- See Also:
- Constant Field Values
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ELSE_EXPRESSION
public static final int ELSE_EXPRESSION
An XPath or XQuery "else" clause. Usage: Q- See Also:
- Constant Field Values
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WHERE_CLAUSE
public static final int WHERE_CLAUSE
A WHERE clause in a FLWOR expression. Usage: Q- See Also:
- Constant Field Values
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ORDER_BY_CLAUSE
public static final int ORDER_BY_CLAUSE
An order-by clause in a FLWOR expression. Usage: Q- See Also:
- Constant Field Values
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TYPESWITCH_EXPRESSION
public static final int TYPESWITCH_EXPRESSION
An XPath or XQuery "typeswitch" expression. Usage: Q- See Also:
- Constant Field Values
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CASE_EXPRESSION
public static final int CASE_EXPRESSION
CASE clause within "typeswitch". Usage: Q- See Also:
- Constant Field Values
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DEFAULT_EXPRESSION
public static final int DEFAULT_EXPRESSION
DEFAULT clause within "typeswitch". Usage: Q- See Also:
- Constant Field Values
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VALIDATE_EXPRESSION
public static final int VALIDATE_EXPRESSION
An XPath or XQuery "validate" expression. Usage: Q- See Also:
- Constant Field Values
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PATH_EXPRESSION
public static final int PATH_EXPRESSION
An XPath or XQuery path expression. Usage: C- See Also:
- Constant Field Values
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SWITCH_EXPRESSION
public static final int SWITCH_EXPRESSION
An XPath or XQuery "switch" expression. Usage: Q- See Also:
- Constant Field Values
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COPY_MODIFY_EXPRESSION
public static final int COPY_MODIFY_EXPRESSION
An XQuery Update copy-modify (transform) expression. Usage: Q- See Also:
- Constant Field Values
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INSERT_EXPRESSION
public static final int INSERT_EXPRESSION
An XQuery Update insert expression. Usage: Q- See Also:
- Constant Field Values
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REPLACE_EXPRESSION
public static final int REPLACE_EXPRESSION
An XPath or XQuery replace expression. Usage: Q- See Also:
- Constant Field Values
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DELETE_EXPRESSION
public static final int DELETE_EXPRESSION
An XPath or XQuery delete expression. Usage: Q- See Also:
- Constant Field Values
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RENAME_EXPRESSION
public static final int RENAME_EXPRESSION
An XPath or XQuery rename expression. Usage: Q- See Also:
- Constant Field Values
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TRACE_CALL
public static final int TRACE_CALL
An explicit call of the fn:trace() function. Usage: QT- See Also:
- Constant Field Values
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SAXON_EVALUATE
public static final int SAXON_EVALUATE
An XPath expression constructed dynamically using saxon:evaluate (or saxon:expression). Usage: QTC- See Also:
- Constant Field Values
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LAZY_EVALUATION
public static final int LAZY_EVALUATION
Lazy evaluation of an expression (this code is used to identify a context created as a saved copy of an existing context, to be stored in a Closure). Usage: C- See Also:
- Constant Field Values
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FUNCTION
public static final int FUNCTION
A function declaration in XSLT or XQuery- See Also:
- Constant Field Values
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XPATH_EXPRESSION
public static final int XPATH_EXPRESSION
XPath expression, otherwise unclassified. The "expression" property references the actual expression, of class ComputedExpression. Used in fallback cases only.- See Also:
- Constant Field Values
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UNCLASSIFIED
public static final int UNCLASSIFIED
Unclassified location. Used in fallback cases only.- See Also:
- Constant Field Values
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CLAUSE_BASE
public static final int CLAUSE_BASE
Values of the form CLAUSE_BASE + n represent FLWOR clauses- See Also:
- Constant Field Values
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