nz.co.gregs.dbvolution.operators

Class DBOperator

java.lang.Object

nz.co.gregs.dbvolution.operators.DBOperator

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

DBBetweenExclusiveOperator, DBBetweenInclusiveExclusiveOperator, DBBetweenInclusiveOperator, DBBetweenOperator, DBEqualsOperator, DBGreaterThanOperator, DBInOperator, DBIsNullOperator, DBLessThanOperator, DBLikeOperator, DBNonOperator, DBPermittedRangeExclusiveOperator, DBPermittedRangeInclusiveOperator, DBPermittedRangeOperator, DBPermittedValuesIgnoreCaseOperator, DBPermittedValuesOperator

public abstract class DBOperator
extends Object
implements Serializable

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Author:

Gregory Graham

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
DBOperator() Create a DBOperator with all NULL values.
DBOperator(DBExpression first) Create a DBOperator with the first parameter specified.
DBOperator(DBExpression first, DBExpression second) Create a DBOperator with first and second parameters specified.
DBOperator(DBExpression first, DBExpression second, DBExpression third) Create a DBOperator with first, second, and third parameters specified.

Method Summary

Methods

Modifier and Type	Method and Description
abstract DBOperator	copyAndAdapt(QueryableDatatypeSyncer.DBSafeInternalQDTAdaptor typeAdaptor) Adds TypeAdaptor support to DBOperator.
boolean	equals(Object otherObject)
abstract BooleanExpression	generateWhereExpression(DBDefinition db, DBExpression column) Create the expression to be used in the query generation.
DBExpression	getFirstValue() Support DBvolution at Patreon
DBExpression	getSecondValue() Support DBvolution at Patreon
DBExpression	getThirdValue() Support DBvolution at Patreon
int	hashCode()
void	includeNulls() Makes this operator treat NULL values as if they match the operator.
void	invertOperator(Boolean invertOperator) Make this operator an exclusive rather than inclusive comparison.
void	not() Make this operator an exclusive rather than inclusive comparison.
void	setFirstValue(DBExpression firstValue)
void	setSecondValue(DBExpression secondValue)
void	setThirdValue(DBExpression thirdValue)

Methods inherited from class java.lang.Object

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

Constructor Detail

DBOperator

public DBOperator()

Create a DBOperator with all NULL values.

DBOperator

public DBOperator(DBExpression first)

Create a DBOperator with the first parameter specified.

Parameters:

first - the first parameter of the operator.

DBOperator

public DBOperator(DBExpression first,
          DBExpression second)

Create a DBOperator with first and second parameters specified.

Parameters:

first - the first parameter of the operator.

second - the second parameter of the operator.

DBOperator

public DBOperator(DBExpression first,
          DBExpression second,
          DBExpression third)

Create a DBOperator with first, second, and third parameters specified.

Parameters:

first - the first parameter of the operator.

second - the second parameter of the operator.

third - the third expression of the operator.

Method Detail

invertOperator

public void invertOperator(Boolean invertOperator)

Make this operator an exclusive rather than inclusive comparison.

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

Parameters:

invertOperator -

not

public void not()

Make this operator an exclusive rather than inclusive comparison.

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

includeNulls

public void includeNulls()

Makes this operator treat NULL values as if they match the operator.

Basically this means an equals operation becomes an (equals or null) operation.

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object otherObject)

Overrides:

equals in class Object

copyAndAdapt

public abstract DBOperator copyAndAdapt(QueryableDatatypeSyncer.DBSafeInternalQDTAdaptor typeAdaptor)

Adds TypeAdaptor support to DBOperator.

Parameters:

typeAdaptor -

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Returns:

the type adapted operator

generateWhereExpression

public abstract BooleanExpression generateWhereExpression(DBDefinition db,
                                        DBExpression column)

Create the expression to be used in the query generation.

Parameters:

db -

column -

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Returns:

a boolean expression

getFirstValue

public DBExpression getFirstValue()

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Returns:

the firstValue

setFirstValue

public void setFirstValue(DBExpression firstValue)

Parameters:

firstValue - the firstValue to set

getSecondValue

public DBExpression getSecondValue()

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Returns:

the secondValue

setSecondValue

public void setSecondValue(DBExpression secondValue)

Parameters:

secondValue - the secondValue to set

getThirdValue

public DBExpression getThirdValue()

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Returns:

the thirdValue

setThirdValue

public void setThirdValue(DBExpression thirdValue)

Parameters:

thirdValue - the thirdValue to set