| Modifier and Type | Field and Description |
|---|---|
| private boolean |
| Access | Constructor and Description |
|---|---|
| pack-priv |
| Modifier and Type | Method and Description |
|---|---|
| public void | accumulate(DataValueDescriptor
the DataValueDescriptor addend (current input to
the aggregation) addend, Object a result set getter ga)Implements org. Iteratively accumulates the addend into the aggregator. |
| protected abstract void | |
| public boolean | didEliminateNulls()
Implements org. Return true if the aggregation eliminated at least one null from the input data set. |
| public void | readExternal(ObjectInput
the stream to read data from in order to restore the object in)Implements java. The object implements the readExternal method to restore its contents by calling the methods of DataInput for primitive types and readObject for objects, strings and arrays. |
| public String | |
| public void | writeExternal(ObjectOutput
the stream to write the object to out)Implements java. The object implements the writeExternal method to save its contents by calling the methods of DataOutput for its primitive values or calling the writeObject method of ObjectOutput for objects, strings, and arrays. |
| eliminatedNulls | back to summary |
|---|---|
| private boolean eliminatedNulls | |
| SystemAggregator | back to summary |
|---|---|
| pack-priv SystemAggregator() | |
| accumulate | back to summary |
|---|---|
| public void accumulate(DataValueDescriptor addend, Object ga) throws StandardException Implements org. Doc from org. Iteratively accumulates the addend into the aggregator. Called on each member of the set of values that is being aggregated.
| |
| accumulate | back to summary |
|---|---|
| protected abstract void accumulate(DataValueDescriptor addend) throws StandardException | |
| didEliminateNulls | back to summary |
|---|---|
| public boolean didEliminateNulls() Implements org. Doc from org. Return true if the aggregation eliminated at least one null from the input data set. | |
| readExternal | back to summary |
|---|---|
| public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException Implements java. Doc from java. The object implements the readExternal method to restore its contents by calling the methods of DataInput for primitive types and readObject for objects, strings and arrays. The readExternal method must read the values in the same sequence and with the same types as were written by writeExternal.
| |
| toString | back to summary |
|---|---|
| public String toString() Overrides java. Doc from java. Returns a string representation of the object.
Satisfying this method's contract implies a non-
| |
| writeExternal | back to summary |
|---|---|
| public void writeExternal(ObjectOutput out) throws IOException Implements java. Doc from java. The object implements the writeExternal method to save its contents by calling the methods of DataOutput for its primitive values or calling the writeObject method of ObjectOutput for objects, strings, and arrays.
| |