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java.lang.Objectorg.apache.openjpa.kernel.TimeSeededSeq
public class TimeSeededSeq
A simplistic implementation of a Seq used
to provide datastore ids. Starts with an id equal to the system's
current time in milliseconds and increments from there.
| Field Summary |
|---|
| Fields inherited from interface org.apache.openjpa.kernel.Seq |
|---|
TYPE_CONTIGUOUS, TYPE_DEFAULT, TYPE_NONTRANSACTIONAL, TYPE_TRANSACTIONAL |
| Constructor Summary | |
|---|---|
TimeSeededSeq()
|
|
| Method Summary | |
|---|---|
void |
allocate(int additional,
StoreContext ctx,
ClassMetaData meta)
Allocate additional values efficiently. |
void |
close()
Free resources used by this sequence. |
Object |
current(StoreContext ctx,
ClassMetaData meta)
Return the current value of the sequence, or null if not available. |
int |
getIncrement()
|
Object |
next(StoreContext ctx,
ClassMetaData meta)
Return the next value in the sequence. |
void |
setIncrement(int increment)
|
void |
setType(int type)
Set the type of sequence. |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
|---|
public TimeSeededSeq()
| Method Detail |
|---|
public void setType(int type)
Seq
setType in interface Seqpublic int getIncrement()
public void setIncrement(int increment)
public Object next(StoreContext ctx,
ClassMetaData meta)
Seq
next in interface Seqctx - the current contextmeta - if this is a datastore identity sequence, the
persistent class the identity value is for; else null
public Object current(StoreContext ctx,
ClassMetaData meta)
Seq
current in interface Seqctx - the current contextmeta - if this is a datastore identity sequence, the
persistent class the identity value is for; else null
public void allocate(int additional,
StoreContext ctx,
ClassMetaData meta)
Seq
allocate in interface Seqctx - the current contextmeta - if this is a datastore identity sequence, the
persistent class the identity value is for; else nullpublic void close()
Seq
close in interface Seqclose in interface Closeable
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