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## org.apache.openjpa.kernel
Class DelegatingSeq

    java.lang.Object
      org.apache.openjpa.kernel.DelegatingSeq

All Implemented Interfaces:
  Seq, Closeable

    public class DelegatingSeq

extends Object
implements Seq

Delegating sequence that can also perform exception translation for use in facades.

Author:
  Abe White

Field Summary

Fields inherited from interface org.apache.openjpa.kernel.Seq
`TYPE_CONTIGUOUS, TYPE_DEFAULT, TYPE_NONTRANSACTIONAL, TYPE_TRANSACTIONAL`

Constructor Summary
`DelegatingSeq(Seq seq)` Constructor; supply delegate.
`DelegatingSeq(Seq seq, RuntimeExceptionTranslator trans)` Constructor; supply delegate and exception translator.

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.
`boolean` | `equals(Object other)`
`Seq` | `getDelegate()` Return the direct delegate.
`Seq` | `getInnermostDelegate()` Return the native delegate.
`int` | `hashCode()`
`Object` | `next(StoreContext ctx, ClassMetaData meta)` Return the next value in the sequence.
`void` | `setType(int type)` Set the type of sequence.
`protected RuntimeException` | `translate(RuntimeException re)` Translate the OpenJPA exception.

Methods inherited from class java.lang.Object
`clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### DelegatingSeq

    public DelegatingSeq(Seq seq)

  Constructor; supply delegate.

### DelegatingSeq

    public DelegatingSeq(Seq seq,
                         RuntimeExceptionTranslator trans)

  Constructor; supply delegate and exception translator.

Method Detail

### getDelegate

    public Seq getDelegate()

  Return the direct delegate.

### getInnermostDelegate

    public Seq getInnermostDelegate()

  Return the native delegate.

### hashCode

    public int hashCode()

  Overrides:
    `hashCode` in class `Object`

### equals

    public boolean equals(Object other)

  Overrides:
    `equals` in class `Object`

### translate

    protected RuntimeException translate(RuntimeException re)

  Translate the OpenJPA exception.

### setType

    public void setType(int type)

  Description copied from interface: `Seq`
  Set the type of sequence.

  Specified by:
    `setType` in interface `Seq`

### next

    public Object next(StoreContext ctx,
                       ClassMetaData meta)

  Description copied from interface: `Seq`
  Return the next value in the sequence.

  Specified by:
    `next` in interface `Seq`
  Parameters:
    `ctx` - the current context
    `meta` - if this is a datastore identity sequence, the persistent class the identity value is for; else null

### current

    public Object current(StoreContext ctx,
                          ClassMetaData meta)

  Description copied from interface: `Seq`
  Return the current value of the sequence, or null if not available.

  Specified by:
    `current` in interface `Seq`
  Parameters:
    `ctx` - the current context
    `meta` - if this is a datastore identity sequence, the persistent class the identity value is for; else null

### allocate

    public void allocate(int additional,
                         StoreContext ctx,
                         ClassMetaData meta)

  Description copied from interface: `Seq`
  Allocate additional values efficiently.

  Specified by:
    `allocate` in interface `Seq`
    `ctx` - the current context
    `meta` - if this is a datastore identity sequence, the persistent class the identity value is for; else null

### close

    public void close()

  Description copied from interface: `Seq`
  Free resources used by this sequence.

  Specified by:
    `close` in interface `Seq`
  Specified by:
    `close` in interface `Closeable`

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Copyright © 2006 Apache Software Foundation. All Rights Reserved.