Package org.nuclos.api.businessobject

Class SearchExpression<T>

java.lang.Object

org.nuclos.api.businessobject.SearchExpression<T>

public class SearchExpression<T>
extends Object

SearchExpression represents a search expression for a Query. It enabled the user to join other SearchExpressions and specify the query parameter that are used to retrieve results

Author:

Matthias Reichart

Field Summary

Fields

Modifier and Type	Field	Description
(package private) List<SearchExpressionPair<T>>	childSearchExpression
(package private) QueryOperation	operator
(package private) QueryOperation	parentOperator
(package private) SearchExpression<T>	parentSearchExpression
(package private) Attribute<T>	source
(package private) Attribute<T>	target
(package private) T	value

Constructor Summary

Constructors

Constructor	Description
SearchExpression(Attribute<T> pSource, Attribute<T> pTarget, QueryOperation pOperator)	This Constructor is used when there are two attributes to compare
SearchExpression(Attribute<T> pSource, QueryOperation pOperator)	This Constructor is used when a attributes is checkd on Null or notNull
SearchExpression(Attribute<T> pSource, T pValue, QueryOperation pOperator)	This Constructor is used when a attributes is compared to a given value with a given operator
SearchExpression(SearchExpression<T> pParentSearchExpression, QueryOperation pOperator)

Method Summary

Modifier and Type	Method	Description
SearchExpression	and(SearchExpression pSecondSearchExpression)	This Constructor is used to join the current SearchExpression with a second SearchExpression using AND
List<SearchExpressionPair<T>>	getChildSearchExpression()	Get all SearchExpressions that are added to the given SearchExpression
QueryOperation	getExpressionOperator()	returns the Operator used for comparison
QueryOperation	getParentOperator()
SearchExpression<T>	getParentSearchExpression()
Attribute<T>	getSource()	returns the Source
Attribute<T>	getTarget()	returns the Target
T	getValue()	returns the Value
boolean	hasChildSearchExpression()	Returns true if there are any SearchExpressions added to this SearchExpression instance
SearchExpression	or(SearchExpression pSecondSearchExpression)	This Constructor is used to join the current SearchExpression with a second SearchExpression using OR

Methods inherited from class java.lang.Object

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

Field Details

source

Attribute<T> source

target

Attribute<T> target

value

T value

operator

QueryOperation operator

parentOperator

QueryOperation parentOperator

parentSearchExpression

SearchExpression<T> parentSearchExpression

childSearchExpression

List<SearchExpressionPair<T>> childSearchExpression

Constructor Details

SearchExpression

public SearchExpression(Attribute<T> pSource,
 Attribute<T> pTarget,
 QueryOperation pOperator)

This Constructor is used when there are two attributes to compare

Parameters:

pSource -

pTarget -

pOperator -

SearchExpression

public SearchExpression(Attribute<T> pSource,
 T pValue,
 QueryOperation pOperator)

This Constructor is used when a attributes is compared to a given value with a given operator

Parameters:

pSource -

pValue -

pOperator -

SearchExpression

public SearchExpression(Attribute<T> pSource,
 QueryOperation pOperator)

This Constructor is used when a attributes is checkd on Null or notNull

Parameters:

pSource -

pOperator -

SearchExpression

public SearchExpression(SearchExpression<T> pParentSearchExpression,
 QueryOperation pOperator)

Method Details

and

public SearchExpression and(SearchExpression pSecondSearchExpression)

This Constructor is used to join the current SearchExpression with a second SearchExpression using AND

or

public SearchExpression or(SearchExpression pSecondSearchExpression)

This Constructor is used to join the current SearchExpression with a second SearchExpression using OR

Parameters:

pSecondSearchExpression -

getSource

public Attribute<T> getSource()

returns the Source

Returns:

getTarget

public Attribute<T> getTarget()

returns the Target

Returns:

getValue

public T getValue()

returns the Value

Returns:

getExpressionOperator

public QueryOperation getExpressionOperator()

returns the Operator used for comparison

Returns:

getParentOperator

public QueryOperation getParentOperator()

getParentSearchExpression

public SearchExpression<T> getParentSearchExpression()

getChildSearchExpression

public List<SearchExpressionPair<T>> getChildSearchExpression()

Get all SearchExpressions that are added to the given SearchExpression

Returns:

List of all SearchExpressions

hasChildSearchExpression

public boolean hasChildSearchExpression()

Returns true if there are any SearchExpressions added to this SearchExpression instance

Returns:

true/false