CaseExpressionImpl (OpenJPA Parent POM 2.4.0 API)

java.lang.Object
- org.apache.openjpa.persistence.query.CaseExpressionImpl

All Implemented Interfaces:: Serializable, CaseExpression, Visitable

public class CaseExpressionImpl
extends Object
implements CaseExpression, Visitable

See Also:: Serialized Form

Constructor Summary

Constructors
Constructor and Description

CaseExpressionImpl()

CaseExpressionImpl(Object caseOperand)

Constructors
Constructor and Description
`CaseExpressionImpl()`
`CaseExpressionImpl(Object caseOperand)`

Method Summary

Methods
Modifier and Type	Method and Description
`String`	`asExpression(AliasContext ctx)` Get a JPQL fragment as used in WHERE clause.
`String`	`asJoinable(AliasContext ctx)` Gets the string representation in FROM clause.
`String`	`asProjection(AliasContext ctx)` Gets the string representation in SELECT projection.
`(package private) void`	`assertThenState()`
`(package private) void`	`assertWhenState()`
`Expression`	`elseCase(Calendar arg)` Add else to a case expression.
`Expression`	`elseCase(Class arg)` Add else to a case expression.
`Expression`	`elseCase(Date arg)` Add else to a case expression.
`Expression`	`elseCase(Enum<?> arg)` Add else to a case expression.
`Expression`	`elseCase(Expression arg)` Add else to a case expression.
`Expression`	`elseCase(Number arg)` Add else to a case expression.
`Expression`	`elseCase(String arg)` Add else to a case expression.
`String`	`getAliasHint(AliasContext ctx)` Gets the hint to be used while creating alias.
`CaseExpression`	`then(Calendar then)` Add a then clause to a general or simple case expression.
`CaseExpression`	`then(Class then)` Add a then clause to a general or simple case expression.
`CaseExpression`	`then(Date then)` Add a then clause to a general or simple case expression.
`CaseExpression`	`then(Enum<?> then)` Add a then clause to a general or simple case expression.
`CaseExpression`	`then(Expression then)` Add a then clause to a general or simple case expression.
`CaseExpression`	`then(Number then)` Add a then clause to a general or simple case expression.
`CaseExpression`	`then(String then)` Add a then clause to a general or simple case expression.
`(package private) String`	`toJPQL(AliasContext ctx, Object o)`
`CaseExpression`	`when(Calendar when)` Add a when clause to a simple case expression.
`CaseExpression`	`when(Class when)` Add a when clause to a simple case expression.
`CaseExpression`	`when(Date when)` Add a when clause to a simple case expression.
`CaseExpression`	`when(Enum<?> when)` Add a when clause to a simple case expression.
`CaseExpression`	`when(Expression when)` Add a when clause to a simple case expression.
`CaseExpression`	`when(Number when)` Add a when clause to a simple case expression.
`CaseExpression`	`when(Predicate when)` Add a when predicate clause to a general case expression.
`CaseExpression`	`when(String when)` Add a when clause to a simple case expression.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - CaseExpressionImpl
```
public CaseExpressionImpl()
```
  - CaseExpressionImpl
```
public CaseExpressionImpl(Object caseOperand)
```
- Method Detail
  - elseCase
```
public Expression elseCase(Expression arg)
```
    Description copied from interface: CaseExpression
    
    Add else to a case expression. A case expression must have an else clause.
    
    Specified by:
    
    elseCase in interface CaseExpression
    
    Parameters:
    arg - - corresponds to the result of the case expression if the when condition is not satisfied
    
    Returns:
    Expression corresponding to the case expression with the added clause
  - elseCase
```
public Expression elseCase(String arg)
```
    Description copied from interface: CaseExpression
    
    Add else to a case expression. A case expression must have an else clause.
    
    Specified by:
    
    elseCase in interface CaseExpression
    
    Parameters:
    arg - - corresponds to the result of the case expression if the when condition is not satisfied
    
    Returns:
    Expression corresponding to the case expression with the added clause
  - elseCase
```
public Expression elseCase(Number arg)
```
    Description copied from interface: CaseExpression
    
    Add else to a case expression. A case expression must have an else clause.
    
    Specified by:
    
    elseCase in interface CaseExpression
    
    Parameters:
    arg - - corresponds to the result of the case expression if the when condition is not satisfied
    
    Returns:
    Expression corresponding to the case expression with the added clause
  - elseCase
```
public Expression elseCase(Date arg)
```
    Description copied from interface: CaseExpression
    
    Add else to a case expression. A case expression must have an else clause.
    
    Specified by:
    
    elseCase in interface CaseExpression
    
    Parameters:
    arg - - corresponds to the result of the case expression if the when condition is not satisfied
    
    Returns:
    Expression corresponding to the case expression with the added clause
  - elseCase
```
public Expression elseCase(Calendar arg)
```
    Description copied from interface: CaseExpression
    
    Add else to a case expression. A case expression must have an else clause.
    
    Specified by:
    
    elseCase in interface CaseExpression
    
    Parameters:
    arg - - corresponds to the result of the case expression if the when condition is not satisfied
    
    Returns:
    Expression corresponding to the case expression with the added clause
  - elseCase
```
public Expression elseCase(Class arg)
```
    Description copied from interface: CaseExpression
    
    Add else to a case expression. A case expression must have an else clause.
    
    Specified by:
    
    elseCase in interface CaseExpression
    
    Parameters:
    arg - - corresponds to the result of the case expression if the when condition is not satisfied
    
    Returns:
    Expression corresponding to the case expression with the added clause
  - elseCase
```
public Expression elseCase(Enum<?> arg)
```
    Description copied from interface: CaseExpression
    
    Add else to a case expression. A case expression must have an else clause.
    
    Specified by:
    
    elseCase in interface CaseExpression
    
    Parameters:
    arg - - corresponds to the result of the case expression if the when condition is not satisfied
    
    Returns:
    Expression corresponding to the case expression with the added clause
  - then
```
public CaseExpression then(Expression then)
```
    Description copied from interface: CaseExpression
    
    Add a then clause to a general or simple case expression. The then clause specifies the result corresponding to the immediately preceding when. Clauses are evaluated in the order added.
    
    Specified by:
    
    then in interface CaseExpression
    
    Parameters:
    then - - corresponds to the result of the case expression if the when is satisfied
    
    Returns:
    CaseExpression corresponding to the case with the added then clause
  - then
```
public CaseExpression then(Number then)
```
    Description copied from interface: CaseExpression
    
    Add a then clause to a general or simple case expression. The then clause specifies the result corresponding to the immediately preceding when. Clauses are evaluated in the order added.
    
    Specified by:
    
    then in interface CaseExpression
    
    Parameters:
    then - - corresponds to the result of the case expression if the when is satisfied
    
    Returns:
    CaseExpression corresponding to the case with the added then clause
  - then
```
public CaseExpression then(String then)
```
    Description copied from interface: CaseExpression
    
    Add a then clause to a general or simple case expression. The then clause specifies the result corresponding to the immediately preceding when. Clauses are evaluated in the order added.
    
    Specified by:
    
    then in interface CaseExpression
    
    Parameters:
    then - - corresponds to the result of the case expression if the when is satisfied
    
    Returns:
    CaseExpression corresponding to the case with the added then clause
  - then
```
public CaseExpression then(Date then)
```
    Description copied from interface: CaseExpression
    
    Add a then clause to a general or simple case expression. The then clause specifies the result corresponding to the immediately preceding when. Clauses are evaluated in the order added.
    
    Specified by:
    
    then in interface CaseExpression
    
    Parameters:
    then - - corresponds to the result of the case expression if the when is satisfied
    
    Returns:
    CaseExpression corresponding to the case with the added then clause
  - then
```
public CaseExpression then(Calendar then)
```
    Description copied from interface: CaseExpression
    
    Add a then clause to a general or simple case expression. The then clause specifies the result corresponding to the immediately preceding when. Clauses are evaluated in the order added.
    
    Specified by:
    
    then in interface CaseExpression
    
    Parameters:
    then - - corresponds to the result of the case expression if the when is satisfied
    
    Returns:
    CaseExpression corresponding to the case with the added then clause
  - then
```
public CaseExpression then(Class then)
```
    Description copied from interface: CaseExpression
    
    Add a then clause to a general or simple case expression. The then clause specifies the result corresponding to the immediately preceding when. Clauses are evaluated in the order added.
    
    Specified by:
    
    then in interface CaseExpression
    
    Parameters:
    then - - corresponds to the result of the case expression if the when is satisfied
    
    Returns:
    CaseExpression corresponding to the case with the added then clause
  - then
```
public CaseExpression then(Enum<?> then)
```
    Description copied from interface: CaseExpression
    
    Add a then clause to a general or simple case expression. The then clause specifies the result corresponding to the immediately preceding when. Clauses are evaluated in the order added.
    
    Specified by:
    
    then in interface CaseExpression
    
    Parameters:
    then - - corresponds to the result of the case expression if the when is satisfied
    
    Returns:
    CaseExpression corresponding to the case with the added then clause
  - when
```
public CaseExpression when(Predicate when)
```
    Description copied from interface: CaseExpression
    
    Add a when predicate clause to a general case expression. The when predicate must be followed by the corresponding then case expression that specifies the result of the specific case. Clauses are evaluated in the order added.
    
    Specified by:
    
    when in interface CaseExpression
    
    Parameters:
    when - - corresponds to the evaluation condition for the specific case
    
    Returns:
    CaseExpression corresponding to the case with the added when clause
  - when
```
public CaseExpression when(Expression when)
```
    Description copied from interface: CaseExpression
    
    Add a when clause to a simple case expression. The when case expression must be followed by the corresponding then case expression that specifies the result of the specific case. Clauses are evaluated in the order added
    
    Specified by:
    
    when in interface CaseExpression
    
    Parameters:
    when - - corresponds to the value against which the case operand of the simple case is tested
    
    Returns:
    CaseExpression corresponding to the case with the added clause
  - when
```
public CaseExpression when(Number when)
```
    Description copied from interface: CaseExpression
    
    Add a when clause to a simple case expression. The when case expression must be followed by the corresponding then case expression that specifies the result of the specific case. Clauses are evaluated in the order added
    
    Specified by:
    
    when in interface CaseExpression
    
    Parameters:
    when - - corresponds to the value against which the case operand of the simple case is tested
    
    Returns:
    CaseExpression corresponding to the case with the added clause
  - when
```
public CaseExpression when(String when)
```
    Description copied from interface: CaseExpression
    
    Add a when clause to a simple case expression. The when case expression must be followed by the corresponding then case expression that specifies the result of the specific case. Clauses are evaluated in the order added
    
    Specified by:
    
    when in interface CaseExpression
    
    Parameters:
    when - - corresponds to the value against which the case operand of the simple case is tested
    
    Returns:
    CaseExpression corresponding to the case with the added clause
  - when
```
public CaseExpression when(Date when)
```
    Description copied from interface: CaseExpression
    
    Add a when clause to a simple case expression. The when case expression must be followed by the corresponding then case expression that specifies the result of the specific case. Clauses are evaluated in the order added
    
    Specified by:
    
    when in interface CaseExpression
    
    Parameters:
    when - - corresponds to the value against which the case operand of the simple case is tested
    
    Returns:
    CaseExpression corresponding to the case with the added clause
  - when
```
public CaseExpression when(Calendar when)
```
    Description copied from interface: CaseExpression
    
    Add a when clause to a simple case expression. The when case expression must be followed by the corresponding then case expression that specifies the result of the specific case. Clauses are evaluated in the order added
    
    Specified by:
    
    when in interface CaseExpression
    
    Parameters:
    when - - corresponds to the value against which the case operand of the simple case is tested
    
    Returns:
    CaseExpression corresponding to the case with the added clause
  - when
```
public CaseExpression when(Class when)
```
    Description copied from interface: CaseExpression
    
    Add a when clause to a simple case expression. The when case expression must be followed by the corresponding then case expression that specifies the result of the specific case. Clauses are evaluated in the order added
    
    Specified by:
    
    when in interface CaseExpression
    
    Parameters:
    when - - corresponds to the value against which the case operand of the simple case is tested
    
    Returns:
    CaseExpression corresponding to the case with the added clause
  - when
```
public CaseExpression when(Enum<?> when)
```
    Description copied from interface: CaseExpression
    
    Add a when clause to a simple case expression. The when case expression must be followed by the corresponding then case expression that specifies the result of the specific case. Clauses are evaluated in the order added
    
    Specified by:
    
    when in interface CaseExpression
    
    Parameters:
    when - - corresponds to the value against which the case operand of the simple case is tested
    
    Returns:
    CaseExpression corresponding to the case with the added clause
  - assertWhenState
```
void assertWhenState()
```
  - assertThenState
```
void assertThenState()
```
  - asExpression
```
public String asExpression(AliasContext ctx)
```
    Description copied from interface: Visitable
    
    Get a JPQL fragment as used in WHERE clause.
    
    Specified by:
    
    asExpression in interface Visitable
  - asProjection
```
public String asProjection(AliasContext ctx)
```
    Description copied from interface: Visitable
    
    Gets the string representation in SELECT projection.
    
    Specified by:
    
    asProjection in interface Visitable
  - asJoinable
```
public String asJoinable(AliasContext ctx)
```
    Description copied from interface: Visitable
    
    Gets the string representation in FROM clause.
    
    Specified by:
    
    asJoinable in interface Visitable
  - getAliasHint
```
public String getAliasHint(AliasContext ctx)
```
    Description copied from interface: Visitable
    
    Gets the hint to be used while creating alias.
    
    Specified by:
    
    getAliasHint in interface Visitable
  - toJPQL
```
String toJPQL(AliasContext ctx,
            Object o)
```

Class CaseExpressionImpl

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

CaseExpressionImpl

CaseExpressionImpl

Method Detail

elseCase

elseCase

elseCase

elseCase

elseCase

elseCase

elseCase

then

then

then

then

then

then

then

when

when

when

when

when

when

when

when

assertWhenState

assertThenState

asExpression

asProjection

asJoinable

getAliasHint

toJPQL