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| javax.jdo.datastore</FONT> |
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| Interface Sequence</H2> |
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| <DL> |
| <DT><PRE>public interface <B>Sequence</B></DL> |
| </PRE> |
| |
| <P> |
| Implementations of this interface can be used to obtain |
| sequences. The behavior with regard to the transaction and |
| rollover behavior are defined in the metadata. |
| <P> |
| |
| <P> |
| <DL> |
| <DT><B>Since:</B></DT> |
| <DD>2.0</DD> |
| <DT><B>Version:</B></DT> |
| <DD>2.0</DD> |
| </DL> |
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| <CODE> void</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../javax/jdo/datastore/Sequence.html#allocate(int)">allocate</A></B>(int additional)</CODE> |
| |
| <BR> |
| Provides a hint to the implementation that the application |
| will need <code>additional</code> sequence value objects in |
| short order.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE> java.lang.Object</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../javax/jdo/datastore/Sequence.html#current()">current</A></B>()</CODE> |
| |
| <BR> |
| Returns the current sequence value object if it is |
| available.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
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| <CODE> long</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../javax/jdo/datastore/Sequence.html#currentValue()">currentValue</A></B>()</CODE> |
| |
| <BR> |
| Returns the current sequence value as a long.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE> java.lang.String</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../javax/jdo/datastore/Sequence.html#getName()">getName</A></B>()</CODE> |
| |
| <BR> |
| Returns the fully qualified name of the <code>Sequence</code>.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE> java.lang.Object</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../javax/jdo/datastore/Sequence.html#next()">next</A></B>()</CODE> |
| |
| <BR> |
| Returns the next sequence value as an Object.</TD> |
| </TR> |
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| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE> long</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../javax/jdo/datastore/Sequence.html#nextValue()">nextValue</A></B>()</CODE> |
| |
| <BR> |
| Returns the next sequence value as a long.</TD> |
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| <A NAME="getName()"><!-- --></A><H3> |
| getName</H3> |
| <PRE> |
| java.lang.String <B>getName</B>()</PRE> |
| <DL> |
| <DD>Returns the fully qualified name of the <code>Sequence</code>. |
| <P> |
| <DD><DL> |
| |
| <DT><B>Returns:</B><DD>the name of the sequence</DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="next()"><!-- --></A><H3> |
| next</H3> |
| <PRE> |
| java.lang.Object <B>next</B>()</PRE> |
| <DL> |
| <DD>Returns the next sequence value as an Object. If the next |
| sequence value is not available, throw JDODataStoreException. |
| <P> |
| <DD><DL> |
| |
| <DT><B>Returns:</B><DD>the next value</DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="allocate(int)"><!-- --></A><H3> |
| allocate</H3> |
| <PRE> |
| void <B>allocate</B>(int additional)</PRE> |
| <DL> |
| <DD>Provides a hint to the implementation that the application |
| will need <code>additional</code> sequence value objects in |
| short order. There is no externally visible behavior of this |
| method. It is used to potentially improve the efficiency of |
| the algorithm of obtaining additional sequence value objects. |
| <P> |
| <DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>additional</CODE> - the number of additional values to allocate</DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="current()"><!-- --></A><H3> |
| current</H3> |
| <PRE> |
| java.lang.Object <B>current</B>()</PRE> |
| <DL> |
| <DD>Returns the current sequence value object if it is |
| available. It is intended to return a sequence value object |
| previously used. If the current sequence value is not available, |
| throw JDODataStoreException. |
| <P> |
| <DD><DL> |
| |
| <DT><B>Returns:</B><DD>the current value</DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="nextValue()"><!-- --></A><H3> |
| nextValue</H3> |
| <PRE> |
| long <B>nextValue</B>()</PRE> |
| <DL> |
| <DD>Returns the next sequence value as a long. If the next |
| sequence value is not available or is not numeric, throw |
| JDODataStoreException. |
| <P> |
| <DD><DL> |
| |
| <DT><B>Returns:</B><DD>the next value</DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="currentValue()"><!-- --></A><H3> |
| currentValue</H3> |
| <PRE> |
| long <B>currentValue</B>()</PRE> |
| <DL> |
| <DD>Returns the current sequence value as a long. If the current |
| sequence value is not available or is not numeric, throw |
| JDODataStoreException. |
| <P> |
| <DD><DL> |
| |
| <DT><B>Returns:</B><DD>the current value</DL> |
| </DD> |
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