public class SimplePartitionKey extends Object implements KeyPartitioningStrategy.PartitionAwareKey, ExternalizableLite, PortableObject
PartitionAwareKey
implementation.
This key could also be used in conjunction with CompositeKey
explicitly associate a partition with custom keys. For example:
new CompositeKey(SimplePartitionKey.getPartitionKey(nPartition), oKeyNatural);
Modifier and Type | Field and Description |
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protected int |
m_nPartition
The partition id.
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Modifier | Constructor and Description |
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|
SimplePartitionKey()
Default constructor is defined for serialization purposes only.
|
protected |
SimplePartitionKey(int nPartition)
Construct a SimplePartitionKey representing the specified partition.
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Modifier and Type | Method and Description |
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boolean |
equals(Object o) |
int |
getPartitionId()
Return the partition id that this key should be associated with.
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static SimplePartitionKey |
getPartitionKey(int nPartition)
Factory method for a SimplePartitionKey.
|
int |
hashCode() |
void |
readExternal(DataInput in)
Restore the contents of this object by loading the object's state from the passed DataInput object.
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void |
readExternal(PofReader in)
Restore the contents of a user type instance by reading its state using the specified PofReader object.
|
String |
toString() |
void |
writeExternal(DataOutput out)
Save the contents of this object by storing the object's state into the passed DataOutput object.
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void |
writeExternal(PofWriter out)
Save the contents of a POF user type instance by writing its state using the specified PofWriter object.
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public SimplePartitionKey()
getPartitionKey(int)
factory method should be used to obtain a SimplePartitionKey.protected SimplePartitionKey(int nPartition)
nPartition
- the partition to create a key forpublic static SimplePartitionKey getPartitionKey(int nPartition)
nPartition
- the partition to create a key forpublic int getPartitionId()
getPartitionId
in interface KeyPartitioningStrategy.PartitionAwareKey
public void readExternal(DataInput in) throws IOException
readExternal
in interface ExternalizableLite
in
- the DataInput stream to read data from in order to restore the state of this objectIOException
- if an I/O exception occursNotActiveException
- if the object is not in its initial state, and therefore cannot be deserialized intopublic void writeExternal(DataOutput out) throws IOException
writeExternal
in interface ExternalizableLite
out
- the DataOutput stream to write the state of this object toIOException
- if an I/O exception occurspublic void readExternal(PofReader in) throws IOException
readExternal
in interface PortableObject
in
- the PofReader from which to read the object's stateIOException
- if an I/O error occurspublic void writeExternal(PofWriter out) throws IOException
writeExternal
in interface PortableObject
out
- the PofWriter to which to write the object's stateIOException
- if an I/O error occurs