com.sas.dataselectors.filters.tree
Class LogicTreeToFilterItemTransform

com.sas.dataselectors.filters.tree.LogicTreeToFilterItemTransform

All Implemented Interfaces:

com.sas.util.transforms.TransformInterface, java.io.Serializable

public class LogicTreeToFilterItemTransform
implements com.sas.util.transforms.TransformInterface

This transform takes a FilterLogicTreeInterface object (or it's root node) and transforms it into the corresponding BIQ FilterItem tree model. New objects are created every time a BIQ model object is required.

See Also:

Serialized Form

Constructor Summary

LogicTreeToFilterItemTransform()
Constructs a new transform without supplying a factory for BIQ model objects.

LogicTreeToFilterItemTransform(FilterObjectFactoryInterface factory)
Constructs a new transform and supplies the factory for BIQ model objects.

Method Summary

protected com.sas.iquery.metadata.expr.ConditionalRelationType	convertLogicalCondition(ConditionalRelationType type)
protected com.sas.iquery.metadata.business.CompoundFilter	createCompoundFilter(LogicalConditionNodeInterface node)
protected com.sas.iquery.metadata.business.FilterItem	createFilterItem(FilterLogicBaseNodeInterface node, com.sas.iquery.metadata.expr.ExpressionInterface expr)
FilterObjectFactoryInterface	getFactory() Returns the factory used when creating new BIQ filter model objects.
protected com.sas.iquery.metadata.business.CompoundFilter	newCompoundFilter()
protected com.sas.iquery.metadata.business.CompoundFilter	newCompoundFilter(ConditionalRelationType relationship)
protected com.sas.iquery.metadata.expr.ExpressionInterface	newFilterExpression(FilterLogicTestNodeInterface testNode) Creates and returns a new ConditionalExpression object from the given test node.
protected com.sas.iquery.metadata.business.FilterItem	newFilterItem()
protected com.sas.iquery.metadata.expr.MultipleConditionalExpression	newMultipleConditionalExpression()
protected com.sas.iquery.metadata.expr.MultipleConditionalExpression	newMultipleConditionalExpression(ConditionalRelationType relationship)
protected java.lang.Object	processLogicalConditionNode(LogicalConditionNodeInterface root)
protected java.lang.Object	processNode(FilterLogicBaseNodeInterface root)
protected java.lang.Object	processNotNode(NotNodeInterface root)
protected java.lang.Object	processTestNode(FilterLogicTestNodeInterface testNode)
void	setFactory(FilterObjectFactoryInterface factory) Sets the BIQ filter model object factory.
java.lang.Object	transform(java.lang.Object source) Attempts to transform the given Object into a BIQ filter model object.
protected boolean	updateFilterItem(com.sas.iquery.metadata.business.FilterItem filterItem, FilterLogicTestNodeInterface testNode)
protected void	updateFilterItem(com.sas.iquery.metadata.business.FilterItem filterItem, java.lang.String name, java.lang.String description, com.sas.iquery.metadata.expr.ExpressionInterface expr)

Constructor Detail

LogicTreeToFilterItemTransform

public LogicTreeToFilterItemTransform()

Constructs a new transform without supplying a factory for BIQ model objects.

LogicTreeToFilterItemTransform

public LogicTreeToFilterItemTransform(FilterObjectFactoryInterface factory)

Constructs a new transform and supplies the factory for BIQ model objects.

Parameters:

factory - the factory to use when creating new BIQ model objects

Method Detail

getFactory

public FilterObjectFactoryInterface getFactory()

Returns the factory used when creating new BIQ filter model objects.

Returns:

the BIQ object factory

setFactory

public void setFactory(FilterObjectFactoryInterface factory)

Sets the BIQ filter model object factory.

Parameters:

factory - the factory to use when creating new BIQ filter model objects

transform

public java.lang.Object transform(java.lang.Object source)
                           throws com.sas.util.transforms.TransformException

Attempts to transform the given Object into a BIQ filter model object. The input object should be either a FilterLogicTreeInterface or a FilterLogicBaseNodeInterface.

Specified by:

transform in interface com.sas.util.transforms.TransformInterface

Parameters:

source - the object to transform

Returns:

the resulting FilterItem constructed from the source, or null

Throws:

com.sas.util.transforms.TransformException - in the event of any exception that halts the transformation

java.lang.IllegalArgumentException - if the source object is not a FilterLogicTreeInterface or FilterLogicBaseNodeInterface object

processNode

protected java.lang.Object processNode(FilterLogicBaseNodeInterface root)
                                throws com.sas.util.transforms.TransformException

Parameters:

root -

Returns:

Throws:

com.sas.util.transforms.TransformException

processNotNode

protected java.lang.Object processNotNode(NotNodeInterface root)
                                   throws com.sas.util.transforms.TransformException

Throws:

com.sas.util.transforms.TransformException

processLogicalConditionNode

protected java.lang.Object processLogicalConditionNode(LogicalConditionNodeInterface root)
                                                throws com.sas.util.transforms.TransformException

Throws:

com.sas.util.transforms.TransformException

createFilterItem

protected com.sas.iquery.metadata.business.FilterItem createFilterItem(FilterLogicBaseNodeInterface node,
                                                                       com.sas.iquery.metadata.expr.ExpressionInterface expr)
                                                                throws com.sas.util.transforms.TransformException

Throws:

com.sas.util.transforms.TransformException

createCompoundFilter

protected com.sas.iquery.metadata.business.CompoundFilter createCompoundFilter(LogicalConditionNodeInterface node)

processTestNode

protected java.lang.Object processTestNode(FilterLogicTestNodeInterface testNode)

convertLogicalCondition

protected com.sas.iquery.metadata.expr.ConditionalRelationType convertLogicalCondition(ConditionalRelationType type)

Parameters:

type - the data selectors model logical condition

Returns:

the BIQ model relation type

updateFilterItem

protected boolean updateFilterItem(com.sas.iquery.metadata.business.FilterItem filterItem,
                                   FilterLogicTestNodeInterface testNode)

Parameters:

filter -

testNode -

Returns:

updateFilterItem

protected void updateFilterItem(com.sas.iquery.metadata.business.FilterItem filterItem,
                                java.lang.String name,
                                java.lang.String description,
                                com.sas.iquery.metadata.expr.ExpressionInterface expr)
                         throws com.sas.iquery.metadata.MetadataException

Throws:

com.sas.iquery.metadata.MetadataException

newFilterItem

protected com.sas.iquery.metadata.business.FilterItem newFilterItem()

Returns:

newCompoundFilter

protected com.sas.iquery.metadata.business.CompoundFilter newCompoundFilter()

Returns:

newCompoundFilter

protected com.sas.iquery.metadata.business.CompoundFilter newCompoundFilter(ConditionalRelationType relationship)

newMultipleConditionalExpression

protected com.sas.iquery.metadata.expr.MultipleConditionalExpression newMultipleConditionalExpression()

newMultipleConditionalExpression

protected com.sas.iquery.metadata.expr.MultipleConditionalExpression newMultipleConditionalExpression(ConditionalRelationType relationship)

newFilterExpression

protected com.sas.iquery.metadata.expr.ExpressionInterface newFilterExpression(FilterLogicTestNodeInterface testNode)

Creates and returns a new ConditionalExpression object from the given test node.

Parameters:

testNode - the test node to process

Returns:

the derived expression