psdi.app.recontask.engine

Class ReconLinkExpression

java.lang.Object

psdi.app.recontask.engine.ReconExpression

psdi.app.recontask.engine.ReconLinkExpression

public class ReconLinkExpression
extends ReconExpression

This class represents a reconciliation link expression and contains methods for evaluating it.

Field Summary

Fields inherited from class psdi.app.recontask.engine.ReconExpression

compiled, expressionTag, infixTokens, reconInfo, rootNode, TOKEN_CONSTANT, TOKEN_DATASET1_FIELD, TOKEN_DATASET2_FIELD, TOKEN_HIGHEST_VALUE, TOKEN_INVALID, TOKEN_LEFT_PARENTHESIS, TOKEN_LOWEST_VALUE, TOKEN_OPERATOR, TOKEN_RIGHT_PARENTHESIS, TOKEN_VALUE, validOperators

Constructor Summary

Constructors

Constructor and Description
ReconLinkExpression(ReconInfo reconInfo) Constructor sets the ReconInfo class into this class.

Method Summary

Modifier and Type	Method and Description
java.util.List	evaluateLinkExpression(ReconValue leadingObject, SubordinateSetAttribute[] subordinateSetAttributes) Evaluates the expression, compiling it first if needed.
protected java.util.List	evaluateLinkExpressionTree(BinaryTreeNode root, ReconValue leadingObject, SubordinateSetAttribute[] subordinateSetAttributes) Traverse the binary tree using a recursive algorithm
protected void	readClause(MboRemote clause) This method reads a clause of a link rule.

Methods inherited from class psdi.app.recontask.engine.ReconExpression

addExpressionToken, addExpressionToken, compileExpression, convertInfixToExpressionTree, convertTreeToInfixString, findOperator, getAndOrAttributeName, getAttributeSet, getAttributeToUnitMap, getCloseParentheses, getCompiledExpressionAsString, getExpressionTag, getExpressionTag, getOpenParentheses, getSequenceNum, handleLogicalAnd, handleLogicalOperator, handleLogicalOr, popLinkPush, prepareAttributeIndexes, processInfixExpression, processOperatorToken, processRightParenthesisToken, readExpression, readExpression, reset, setExpressionTag, walkTreeReplaceAttributeNamesWithIndexes, walkTreeToGetAttribSet, walkTreeToGetAttribToUnitMap

Methods inherited from class java.lang.Object

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

Constructor Detail

ReconLinkExpression

public ReconLinkExpression(ReconInfo reconInfo)

Constructor sets the ReconInfo class into this class.

Method Detail

readClause

protected void readClause(MboRemote clause)
                   throws MXException,
                          java.rmi.RemoteException

This method reads a clause of a link rule. A link task may have many link rules, each of which must have one or more link clauses. The link clause is basically part of the link rule's overall evaluation expression.

Specified by:

readClause in class ReconExpression

Throws:

MXException

java.rmi.RemoteException

evaluateLinkExpression

public java.util.List evaluateLinkExpression(ReconValue leadingObject,
                                             SubordinateSetAttribute[] subordinateSetAttributes)
                                      throws MXException

Evaluates the expression, compiling it first if needed.

Throws:

MXException

evaluateLinkExpressionTree

protected java.util.List evaluateLinkExpressionTree(BinaryTreeNode root,
                                                    ReconValue leadingObject,
                                                    SubordinateSetAttribute[] subordinateSetAttributes)
                                             throws MXApplicationException

Traverse the binary tree using a recursive algorithm

The pseudocode is

if (root != null)

if ( [current node contains an operator] )

x = evaluateTree(root.left_child);

y = evaluateTree(root.right_child);

[Perform operation on x and y, specified by the operator and store result in z]

return z;

else

return root->data;

Throws:

MXApplicationException