net.sf.joost.instruction
Class ForEachFactory.Instance

java.lang.Object
  net.sf.joost.instruction.AbstractInstruction
      net.sf.joost.instruction.NodeBase
          net.sf.joost.instruction.ForEachFactory.Instance

All Implemented Interfaces:

Constants

Enclosing class:

ForEachFactory

public final class ForEachFactory.Instance

extends NodeBase

Represents an instance of the for-each-item element.

Nested Class Summary

Nested classes inherited from class net.sf.joost.instruction.NodeBase

NodeBase.End

Field Summary

private AbstractInstruction	contents
private boolean	continued Determines whether this instruction is encountered the first time (false; i.e. the select attribute needs to be evaluated) or during the processing (true; i.e. this is part of the loop)
private String	expName
private Stack	resultStack Stack that stores the remaining sequence of the select attribute in case this for-each-item was interrupted via stx:process-xxx
private Tree	select
private AbstractInstruction	successor
private String	varName

Fields inherited from class net.sf.joost.instruction.NodeBase

lastChild, localFieldStack, nodeEnd, parent, preserveSpace, publicId, qName, scopedVariables, systemId

Fields inherited from class net.sf.joost.instruction.AbstractInstruction

colNo, lineNo, next

Fields inherited from interface net.sf.joost.Constants

DEBUG, DEFAULT_ENCODING, FEAT_NS, FEAT_NSPREFIX, FEATURE_URI_PREFIX, FUNC_NS, JOOST_EXT_NS, PR_ATTRIBUTES, PR_BUFFER, PR_CHILDREN, PR_CONTINUE, PR_ERROR, PR_SELF, PR_SIBLINGS, STX_NS

Constructor Summary

protected

ForEachFactory.Instance(String qName, NodeBase parent, ParseContext context, String varName, String expName, Tree select)

Method Summary

boolean	compile(int pass) Create the loop by connecting the end with the start
short	process(Context context) If continued is true then take the next item from a previously computed sequence, otherwise evaluate the select attribute and take the first item.
short	processEnd(Context context) Sets continued to true to signal the loop.

Methods inherited from class net.sf.joost.instruction.NodeBase

declareVariable, getNode, getNodeEnd, insert, processable, setEndLocation, toString

Methods inherited from class java.lang.Object

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

Field Detail

varName

private String varName

expName

private String expName

select

private Tree select

resultStack

private Stack resultStack

Stack that stores the remaining sequence of the select attribute in case this for-each-item was interrupted via stx:process-xxx

contents

private AbstractInstruction contents

successor

private AbstractInstruction successor

continued

private boolean continued

Determines whether this instruction is encountered the first time (false; i.e. the select attribute needs to be evaluated) or during the processing (true; i.e. this is part of the loop)

Constructor Detail

ForEachFactory.Instance

protected ForEachFactory.Instance(String qName,
                                  NodeBase parent,
                                  ParseContext context,
                                  String varName,
                                  String expName,
                                  Tree select)

Method Detail

compile

public boolean compile(int pass)

Create the loop by connecting the end with the start

Overrides:

compile in class NodeBase

Parameters:

pass - the number of invocations already performed on this node

Returns:

true if another invocation in the next pass is necessary, false if the compiling is complete. This instance returns false.

process

public short process(Context context)
              throws SAXException

If continued is true then take the next item from a previously computed sequence, otherwise evaluate the select attribute and take the first item.

Overrides:

process in class NodeBase

Returns:

Constants.PR_CONTINUE

Throws:

SAXException - if an error occurs (in a derived class)

processEnd

public short processEnd(Context context)
                 throws SAXException

Sets continued to true to signal the loop.

Overrides:

processEnd in class NodeBase

Parameters:

context - the current context

Returns:

Constants.PR_CONTINUE

Throws:

SAXException - if an error occurs (in a derived class)