ch.ethz.mxquery.query.parser
Class RewriteExpression

java.lang.Object
  ch.ethz.mxquery.model.Iterator
      ch.ethz.mxquery.query.parser.RewriteExpression

All Implemented Interfaces:

XDMIterator, Traversable

public class RewriteExpression
extends Iterator

General encapsulation class for expression that will not turn into an explicit expression, but rewritten/integrated to other expressions

Field Summary

static int	CDATA
static int	CHAR_REF
static int	ENCLOSED_EXPRESSION
static int	FUNCTION

Fields inherited from interface ch.ethz.mxquery.model.XDMIterator

EXPR_CATEGORY_SEQUENTIAL, EXPR_CATEGORY_SIMPLE, EXPR_CATEGORY_UPDATING, EXPR_CATEGORY_VACUOUS, EXPR_PARAM_CHEAPEVAL, EXPR_PARAM_VARIABLE, EXPR_PARAM_WINDOW, EXPR_PARAM_XDMGEN

Constructor Summary

RewriteExpression(int expressionType, Context ctx, Iterator[] subIters, QueryLocation location)

Method Summary

int	getExpressionType()
Token	next() Produces the next XDM token This method typically implements the base functionality of an Iterator and computes the value of the next token.

Methods inherited from class ch.ethz.mxquery.model.Iterator

addPredicates, close, copy, copyInts, copyIterators, copyQNames, copyStrings, copyTypeInfos, getAllSubIters, getAllSubItersRecursive, getContext, getExpressionCategoryType, getLoc, getPendingUpdateList, getPredicates, getStaticType, getSubIters, hasPredicates, isConstModePreserve, isExprParameter, isOpen, isResettable, removePredicates, reset, setConstModePreserve, setContext, setLoc, setOrderByExpr, setParam, setResettable, setReturnExpr, setSubIters, setSubIters, setSubIters, setWhereExpr, traverse, traverseIteratorTree

Methods inherited from class java.lang.Object

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

Field Detail

ENCLOSED_EXPRESSION

public static final int ENCLOSED_EXPRESSION

See Also:

Constant Field Values

CHAR_REF

public static final int CHAR_REF

See Also:

Constant Field Values

CDATA

public static final int CDATA

See Also:

Constant Field Values

FUNCTION

public static final int FUNCTION

See Also:

Constant Field Values

Constructor Detail

RewriteExpression

public RewriteExpression(int expressionType,
                         Context ctx,
                         Iterator[] subIters,
                         QueryLocation location)

Method Detail

next

public Token next()
           throws MXQueryException

Description copied from interface: XDMIterator

Produces the next XDM token This method typically implements the base functionality of an Iterator and computes the value of the next token.

Returns:

The XDM token representing the next fragment of the XDM instance

Throws:

MXQueryException

getExpressionType

public int getExpressionType()