AggregateStateImpl

java.lang.Object
- de.grogra.xl.util.AggregateStateImpl<T>

All Implemented Interfaces:

AggregateState, BooleanAggregateState, ByteAggregateState, CharAggregateState, DoubleAggregateState, FloatAggregateState, IntAggregateState, LongAggregateState, ObjectAggregateState<T>, ShortAggregateState
```
public final class AggregateStateImpl<T>
extends java.lang.Object
implements BooleanAggregateState, ByteAggregateState, ShortAggregateState, CharAggregateState, IntAggregateState, LongAggregateState, FloatAggregateState, DoubleAggregateState, ObjectAggregateState<T>
```
Utility class which implements all AggregateState interfaces and provides some general fields for storing state. Instances of this class are pooled so that heap traffic is reduced.

Author:

Ole Kniemeyer

Field Summary

Fields
Modifier and Type	Field and Description
`T`	`aval` This field contains the result if the type is a reference type.
`java.lang.Object`	`aval1` This field may be used freely by aggregate methods.
`java.lang.Object`	`aval2` This field may be used freely by aggregate methods.
`java.lang.Object`	`aval3` This field may be used freely by aggregate methods.
`java.lang.Object`	`aval4` This field may be used freely by aggregate methods.
`double`	`dval` This field contains the result if the type is `double`.
`double`	`dval1` This field may be used freely by aggregate methods.
`double`	`dval2` This field may be used freely by aggregate methods.
`double`	`dval3` This field may be used freely by aggregate methods.
`double`	`dval4` This field may be used freely by aggregate methods.
`float`	`fval` This field contains the result if the type is `float`.
`float`	`fval1` This field may be used freely by aggregate methods.
`float`	`fval2` This field may be used freely by aggregate methods.
`float`	`fval3` This field may be used freely by aggregate methods.
`float`	`fval4` This field may be used freely by aggregate methods.
`int`	`ival` This field contains the result if the type is `boolean`, `byte`, `short`, `char`, or `int`.
`int`	`ival1` This field may be used freely by aggregate methods.
`int`	`ival2` This field may be used freely by aggregate methods.
`int`	`ival3` This field may be used freely by aggregate methods.
`int`	`ival4` This field may be used freely by aggregate methods.
`long`	`lval` This field contains the result if the type is `long`.
`long`	`lval1` This field may be used freely by aggregate methods.
`long`	`lval2` This field may be used freely by aggregate methods.
`long`	`lval3` This field may be used freely by aggregate methods.
`long`	`lval4` This field may be used freely by aggregate methods.

Method Summary

Methods
Modifier and Type	Method and Description
`static AggregateStateImpl<?>`	`allocate()`
`boolean`	`getBooleanResult()` Returns the result of the aggregation.
`byte`	`getByteResult()` Returns the result of the aggregation.
`char`	`getCharResult()` Returns the result of the aggregation.
`double`	`getDoubleResult()` Returns the result of the aggregation.
`float`	`getFloatResult()` Returns the result of the aggregation.
`int`	`getIntResult()` Returns the result of the aggregation.
`long`	`getLongResult()` Returns the result of the aggregation.
`T`	`getObjectResult()` Returns the result of the aggregation.
`short`	`getShortResult()` Returns the result of the aggregation.
`boolean`	`isFinished()` Returns `true` to indicate the invoker of the aggregate method that the computation of the aggregate value has been completed by the aggregate method, even if there are values left for aggregation.
`void`	`setFinished()` Sets the `finished`-flag to `true`.

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

- Field Detail
  - aval
```
public T aval
```
    This field contains the result if the type is a reference type.
  - aval1
```
public java.lang.Object aval1
```
    This field may be used freely by aggregate methods.
  - aval2
```
public java.lang.Object aval2
```
    This field may be used freely by aggregate methods.
  - aval3
```
public java.lang.Object aval3
```
    This field may be used freely by aggregate methods.
  - aval4
```
public java.lang.Object aval4
```
    This field may be used freely by aggregate methods.
  - dval
```
public double dval
```
    This field contains the result if the type is double.
  - dval1
```
public double dval1
```
    This field may be used freely by aggregate methods.
  - dval2
```
public double dval2
```
    This field may be used freely by aggregate methods.
  - dval3
```
public double dval3
```
    This field may be used freely by aggregate methods.
  - dval4
```
public double dval4
```
    This field may be used freely by aggregate methods.
  - fval
```
public float fval
```
    This field contains the result if the type is float.
  - fval1
```
public float fval1
```
    This field may be used freely by aggregate methods.
  - fval2
```
public float fval2
```
    This field may be used freely by aggregate methods.
  - fval3
```
public float fval3
```
    This field may be used freely by aggregate methods.
  - fval4
```
public float fval4
```
    This field may be used freely by aggregate methods.
  - ival
```
public int ival
```
    This field contains the result if the type is boolean, byte, short, char, or int.
  - ival1
```
public int ival1
```
    This field may be used freely by aggregate methods.
  - ival2
```
public int ival2
```
    This field may be used freely by aggregate methods.
  - ival3
```
public int ival3
```
    This field may be used freely by aggregate methods.
  - ival4
```
public int ival4
```
    This field may be used freely by aggregate methods.
  - lval
```
public long lval
```
    This field contains the result if the type is long.
  - lval1
```
public long lval1
```
    This field may be used freely by aggregate methods.
  - lval2
```
public long lval2
```
    This field may be used freely by aggregate methods.
  - lval3
```
public long lval3
```
    This field may be used freely by aggregate methods.
  - lval4
```
public long lval4
```
    This field may be used freely by aggregate methods.
- Method Detail
  - allocate
```
public static AggregateStateImpl<?> allocate()
```
  - getBooleanResult
```
public boolean getBooleanResult()
```
    Description copied from interface: BooleanAggregateState
    
    Returns the result of the aggregation. This is only valid after the aggregate method has been invoked for a last time with its finished argument set to true.
    
    Specified by:
    
    getBooleanResult in interface BooleanAggregateState
    
    Returns:
    aggregated value
  - getByteResult
```
public byte getByteResult()
```
    Description copied from interface: ByteAggregateState
    
    Returns the result of the aggregation. This is only valid after the aggregate method has been invoked for a last time with its finished argument set to true.
    
    Specified by:
    
    getByteResult in interface ByteAggregateState
    
    Returns:
    aggregated value
  - getCharResult
```
public char getCharResult()
```
    Description copied from interface: CharAggregateState
    
    Returns the result of the aggregation. This is only valid after the aggregate method has been invoked for a last time with its finished argument set to true.
    
    Specified by:
    
    getCharResult in interface CharAggregateState
    
    Returns:
    aggregated value
  - getDoubleResult
```
public double getDoubleResult()
```
    Description copied from interface: DoubleAggregateState
    
    Returns the result of the aggregation. This is only valid after the aggregate method has been invoked for a last time with its finished argument set to true.
    
    Specified by:
    
    getDoubleResult in interface DoubleAggregateState
    
    Returns:
    aggregated value
  - getFloatResult
```
public float getFloatResult()
```
    Description copied from interface: FloatAggregateState
    
    Returns the result of the aggregation. This is only valid after the aggregate method has been invoked for a last time with its finished argument set to true.
    
    Specified by:
    
    getFloatResult in interface FloatAggregateState
    
    Returns:
    aggregated value
  - getIntResult
```
public int getIntResult()
```
    Description copied from interface: IntAggregateState
    
    Returns the result of the aggregation. This is only valid after the aggregate method has been invoked for a last time with its finished argument set to true.
    
    Specified by:
    
    getIntResult in interface IntAggregateState
    
    Returns:
    aggregated value
  - getLongResult
```
public long getLongResult()
```
    Description copied from interface: LongAggregateState
    
    Returns the result of the aggregation. This is only valid after the aggregate method has been invoked for a last time with its finished argument set to true.
    
    Specified by:
    
    getLongResult in interface LongAggregateState
    
    Returns:
    aggregated value
  - getObjectResult
```
public T getObjectResult()
```
    Description copied from interface: ObjectAggregateState
    
    Returns the result of the aggregation. This is only valid after the aggregate method has been invoked for a last time with its finished argument set to true.
    
    Specified by:
    
    getObjectResult in interface ObjectAggregateState<T>
    
    Returns:
    aggregated value
  - getShortResult
```
public short getShortResult()
```
    Description copied from interface: ShortAggregateState
    
    Returns the result of the aggregation. This is only valid after the aggregate method has been invoked for a last time with its finished argument set to true.
    
    Specified by:
    
    getShortResult in interface ShortAggregateState
    
    Returns:
    aggregated value
  - isFinished
```
public boolean isFinished()
```
    Description copied from interface: AggregateState
    
    Returns true to indicate the invoker of the aggregate method that the computation of the aggregate value has been completed by the aggregate method, even if there are values left for aggregation. E.g., this is the case for a short circuit implementation of the boolean or where the result is known when the first true-value is encountered. The invoker must not invoke the aggregate method again.
    
    Specified by:
    
    isFinished in interface AggregateState
    
    Returns:
    true iff the final aggregated value is already known
  - setFinished
```
public void setFinished()
```
    Sets the finished-flag to true. Subsequent invocations of isFinished() will return true.

Class AggregateStateImpl<T>

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

aval

aval1

aval2

aval3

aval4

dval

dval1

dval2

dval3

dval4

fval

fval1

fval2

fval3

fval4

ival

ival1

ival2

ival3

ival4

lval

lval1

lval2

lval3

lval4

Method Detail

allocate

getBooleanResult

getByteResult

getCharResult

getDoubleResult

getFloatResult

getIntResult

getLongResult

getObjectResult

getShortResult

isFinished

setFinished