nz.co.gregs.dbvolution.operators

Class DBPermittedValuesOperator<T>

java.lang.Object

nz.co.gregs.dbvolution.operators.DBOperator

nz.co.gregs.dbvolution.operators.DBPermittedValuesOperator<T>

Type Parameters:

T -

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

DBBooleanPermittedValuesOperator

public class DBPermittedValuesOperator<T>
extends DBOperator

Provides an operator that checks that the column matches the provided values. Creates a virtual operator that provides access to the ISNULL, EQUALS, or IN operator as required.

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Author:

Gregory Graham

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected DBOperator	operator

Constructor Summary

Constructors

Constructor and Description
DBPermittedValuesOperator(Collection<T> permitted) Provides an operator that checks that the column matches the provided values.
DBPermittedValuesOperator(T... permitted) Provides an operator that checks that the column matches the provided values.

Method Summary

Methods

Modifier and Type	Method and Description
DBOperator	copyAndAdapt(QueryableDatatypeSyncer.DBSafeInternalQDTAdaptor typeAdaptor) Adds TypeAdaptor support to DBOperator.
BooleanExpression	generateWhereExpression(DBDefinition db, DBExpression column) Create the expression to be used in the query generation.
void	invertOperator(Boolean invertOperator) Make this operator an exclusive rather than inclusive comparison.
void	not() Make this operator an exclusive rather than inclusive comparison.

Methods inherited from class nz.co.gregs.dbvolution.operators.DBOperator

equals, getFirstValue, getSecondValue, getThirdValue, hashCode, includeNulls, setFirstValue, setSecondValue, setThirdValue

Methods inherited from class java.lang.Object

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

Field Detail

operator

protected DBOperator operator

Constructor Detail

DBPermittedValuesOperator

public DBPermittedValuesOperator(Collection<T> permitted)

Provides an operator that checks that the column matches the provided values. Creates a virtual operator that provides access to the ISNULL, EQUALS, or IN operator as required.

Parameters:

permitted - a list of strings that are permitted values.

DBPermittedValuesOperator

public DBPermittedValuesOperator(T... permitted)

Provides an operator that checks that the column matches the provided values. Creates a virtual operator that provides access to the ISNULL, EQUALS, or IN operator as required.

Parameters:

permitted - a list of strings that are permitted values.

Method Detail

copyAndAdapt

public DBOperator copyAndAdapt(QueryableDatatypeSyncer.DBSafeInternalQDTAdaptor typeAdaptor)

Description copied from class: DBOperator

Adds TypeAdaptor support to DBOperator.

Specified by:

copyAndAdapt in class DBOperator

Parameters:

typeAdaptor -

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Returns:

the type adapted operator

generateWhereExpression

public BooleanExpression generateWhereExpression(DBDefinition db,
                                        DBExpression column)

Description copied from class: DBOperator

Create the expression to be used in the query generation.

Specified by:

generateWhereExpression in class DBOperator

column -

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Returns:

a boolean expression

invertOperator

public void invertOperator(Boolean invertOperator)

Description copied from class: DBOperator

Make this operator an exclusive rather than inclusive comparison.

Basically switches the operator from, for instance, "==" to "!=".

Overrides:

invertOperator in class DBOperator

not

public void not()

Description copied from class: DBOperator

Make this operator an exclusive rather than inclusive comparison.

Basically switches the operator from, for instance, "==" to "!=".

Overrides:

not in class DBOperator