com.saxonica.update

Class UpdateParser

java.lang.Object

com.saxonica.update.UpdateParser

public class UpdateParser
extends Object

Parser utility methods for the XQuery Update extensions

Method Summary

Methods

Modifier and Type	Method and Description
static Expression	parseDeleteExpression(ExpressionParser p) Parse a delete expression.
static Expression	parseInsertExpression(ExpressionParser p) Parse the insert expression Syntax: insert_node Expr choice Expr choice: "as first into" | "as last into" | "into" | "after" | "before"
static Expression	parseRenameExpression(ExpressionParser p) Parse a "rename" expression.
static Expression	parseReplaceNodeExpression(ExpressionParser p) Parse a "replace node" expression.
static Expression	parseReplaceValueExpression(ExpressionParser p) Parse a "replace value" expression.
static Expression	parseTransformExpression(ExpressionParser p) Parse the "transform" (that is, copy/modify/return) expression Syntax: "copy" "$" VarName ":=" ExprSingle ("," "$" VarName ":=" ExprSingle)* "modify" ExprSingle "return" ExprSingle

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

parseTransformExpression

public static Expression parseTransformExpression(ExpressionParser p)
                                           throws XPathException

Parse the "transform" (that is, copy/modify/return) expression Syntax: "copy" "$" VarName ":=" ExprSingle ("," "$" VarName ":=" ExprSingle)* "modify" ExprSingle "return" ExprSingle

Parameters:

p - the calling expression parser

Returns:

the resulting expression

Throws:

XPathException - in the event of a syntax error

parseInsertExpression

public static Expression parseInsertExpression(ExpressionParser p)
                                        throws XPathException

Parse the insert expression Syntax: insert_node Expr choice Expr choice: "as first into" | "as last into" | "into" | "after" | "before"

Parameters:

p - the calling expression parser

Returns:

the InsertExpression

Throws:

XPathException - in the event of a syntax error

parseDeleteExpression

public static Expression parseDeleteExpression(ExpressionParser p)
                                        throws XPathException

Parse a delete expression. Syntax: delete_node TargetExpr

Parameters:

p - the calling expression parser

Returns:

the expression

Throws:

XPathException - in the event of a syntax error

parseReplaceNodeExpression

public static Expression parseReplaceNodeExpression(ExpressionParser p)
                                             throws XPathException

Parse a "replace node" expression. Syntax: replace_node TargetExpr with ExprSingle

Parameters:

p - the calling expression parser

Returns:

the expression

Throws:

XPathException - in the event of a syntax error

parseReplaceValueExpression

public static Expression parseReplaceValueExpression(ExpressionParser p)
                                              throws XPathException

Parse a "replace value" expression. Syntax: replace_value "of" "node" TargetExpr with ExprSingle

Parameters:

p - the calling expression parser

Returns:

the expression

Throws:

XPathException - in the event of a syntax error

parseRenameExpression

public static Expression parseRenameExpression(ExpressionParser p)
                                        throws XPathException

Parse a "rename" expression. Syntax: rename_node TargetExpr as ExprSingle

Parameters:

p - the calling expression parser

Returns:

the expression

Throws:

XPathException - in the event of a syntax error