|
|
|
Berkeley DB version 4.4.20 |
||||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Object com.sleepycat.bind.tuple.TupleBase com.sleepycat.bind.tuple.TupleBinding
An abstract EntryBinding
that treats a key or data entry as a
tuple; it includes predefined bindings for Java primitive types.
This class takes care of converting the entries to/from TupleInput
and TupleOutput
objects. Its two abstract methods must
be implemented by a concrete subclass to convert between tuples and key or
data objects.
For key or data entries which are Java primitive classes (String,
Integer, etc) getPrimitiveBinding(java.lang.Class)
may be used to return a builtin
tuple binding. A custom tuple binding for these types is not needed.
Constructor Summary | |
TupleBinding()
Creates a tuple binding. |
Method Summary | |
Object |
entryToObject(DatabaseEntry entry)
Converts a entry buffer into an Object. |
abstract Object |
entryToObject(TupleInput input)
Constructs a key or data object from a TupleInput entry. |
static TupleBinding |
getPrimitiveBinding(Class cls)
Creates a tuple binding for a primitive Java class. |
void |
objectToEntry(Object object,
DatabaseEntry entry)
Converts an Object into a entry buffer. |
abstract void |
objectToEntry(Object object,
TupleOutput output)
Converts a key or data object to a tuple entry. |
Methods inherited from class com.sleepycat.bind.tuple.TupleBase |
entryToInput, getTupleBufferSize, getTupleOutput, inputToEntry, newOutput, newOutput, outputToEntry, setTupleBufferSize |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
public TupleBinding()
Method Detail |
public Object entryToObject(DatabaseEntry entry)
EntryBinding
entryToObject
in interface EntryBinding
entry
- is the source entry buffer.
public void objectToEntry(Object object, DatabaseEntry entry)
EntryBinding
objectToEntry
in interface EntryBinding
object
- is the source Object.entry
- is the destination entry buffer.public abstract Object entryToObject(TupleInput input)
TupleInput
entry.
input
- is the tuple key or data entry.
public abstract void objectToEntry(Object object, TupleOutput output)
object
- is the key or data object.output
- is the tuple entry to which the key or data should be
written.public static TupleBinding getPrimitiveBinding(Class cls)
String
Character
Boolean
Byte
Short
Integer
Long
Float
Double
cls
- is the primitive Java class.
|
Berkeley DB version 4.4.20 |
||||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |