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java.lang.Objectcom.sleepycat.bind.tuple.TupleTupleKeyCreator
com.sleepycat.bind.tuple.TupleTupleMarshalledKeyCreator
A concrete key creator that works in conjunction with a TupleTupleMarshalledBinding. This key creator works by calling the
methods of the MarshalledTupleKeyEntity interface to create and
clear the index key.
Note that a marshalled tuple key creator is somewhat less efficient than a non-marshalled key tuple creator because more conversions are needed. A marshalled key creator must convert the entry to an object in order to create the key, while an unmarshalled key creator does not.
| Constructor Summary | |
TupleTupleMarshalledKeyCreator(TupleTupleMarshalledBinding binding,
String keyName)
Creates a tuple-tuple marshalled key creator. |
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| Method Summary | |
boolean |
createSecondaryKey(TupleInput primaryKeyInput,
TupleInput dataInput,
TupleOutput indexKeyOutput)
Creates the index key from primary key tuple and data tuple. |
boolean |
nullifyForeignKey(TupleInput dataInput,
TupleOutput dataOutput)
Clears the index key in the tuple data entry. |
| Methods inherited from class com.sleepycat.bind.tuple.TupleTupleKeyCreator |
createSecondaryKey, nullifyForeignKey |
| Methods inherited from class java.lang.Object |
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
public TupleTupleMarshalledKeyCreator(TupleTupleMarshalledBinding binding,
String keyName)
binding - is the binding used for the tuple-tuple entity.keyName - is the key name passed to the MarshalledTupleKeyEntity.marshalSecondaryKey(java.lang.String, com.sleepycat.bind.tuple.TupleOutput) method to identify the
index key.| Method Detail |
public boolean createSecondaryKey(TupleInput primaryKeyInput,
TupleInput dataInput,
TupleOutput indexKeyOutput)
TupleTupleKeyCreator
createSecondaryKey in class TupleTupleKeyCreatorprimaryKeyInput - is the TupleInput for the primary key
entry.dataInput - is the TupleInput for the data entry.indexKeyOutput - is the destination index key tuple.
public boolean nullifyForeignKey(TupleInput dataInput,
TupleOutput dataOutput)
TupleTupleKeyCreatorThe secondary key should be output or removed by this method such
that TupleTupleKeyCreator.createSecondaryKey(com.sleepycat.db.SecondaryDatabase, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry) will return false. Other fields in the
data object should remain unchanged.
nullifyForeignKey in class TupleTupleKeyCreatordataInput - is the TupleInput for the data entry.dataOutput - is the destination TupleOutput.
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