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| javax.jdo.annotations</FONT> |
| <BR> |
| Annotation Type Column</H2> |
| <HR> |
| <DL> |
| <DT><PRE><FONT SIZE="-1">@Target(value={FIELD,METHOD}) |
| @Retention(value=RUNTIME) |
| </FONT>public @interface <B>Column</B></DL> |
| </PRE> |
| |
| <P> |
| Annotation for a column in the database. |
| Corresponds to the xml element "column". |
| <P> |
| |
| <P> |
| <DL> |
| <DT><B>Since:</B></DT> |
| <DD>2.1</DD> |
| <DT><B>Version:</B></DT> |
| <DD>2.1</DD> |
| </DL> |
| <HR> |
| |
| <P> |
| <!-- =========== ANNOTATION TYPE OPTIONAL MEMBER SUMMARY =========== --> |
| |
| <A NAME="annotation_type_optional_element_summary"><!-- --></A> |
| <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
| <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
| <TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> |
| <B>Optional Element Summary</B></FONT></TH> |
| </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/annotations/Column.html#allowsNull()">allowsNull</A></B></CODE> |
| |
| <BR> |
| Whether the column allows null values to be inserted.</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/annotations/Column.html#defaultValue()">defaultValue</A></B></CODE> |
| |
| <BR> |
| Default value for this column.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE> <A HREF="../../../javax/jdo/annotations/Extension.html" title="annotation in javax.jdo.annotations">Extension</A>[]</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../javax/jdo/annotations/Column.html#extensions()">extensions</A></B></CODE> |
| |
| <BR> |
| Vendor extensions.</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/annotations/Column.html#insertValue()">insertValue</A></B></CODE> |
| |
| <BR> |
| Value to be inserted when this is an "unmapped" column</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/annotations/Column.html#jdbcType()">jdbcType</A></B></CODE> |
| |
| <BR> |
| JDBC Type for this column.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE> int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../javax/jdo/annotations/Column.html#length()">length</A></B></CODE> |
| |
| <BR> |
| Maximum length of data stored in this column.</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/annotations/Column.html#name()">name</A></B></CODE> |
| |
| <BR> |
| Name of the column.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE> int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../javax/jdo/annotations/Column.html#scale()">scale</A></B></CODE> |
| |
| <BR> |
| Scale for the column when handling floating point values.</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/annotations/Column.html#sqlType()">sqlType</A></B></CODE> |
| |
| <BR> |
| SQL Type for this column.</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/annotations/Column.html#target()">target</A></B></CODE> |
| |
| <BR> |
| Target column for this column in the other table when part of a |
| foreign key relation.</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/annotations/Column.html#targetMember()">targetMember</A></B></CODE> |
| |
| <BR> |
| Target member in the other class or interface for this column |
| when part of a bidirectional relation.</TD> |
| </TR> |
| </TABLE> |
| |
| <P> |
| <A NAME="name()"><!-- --></A><H3> |
| name</H3> |
| <PRE> |
| public abstract java.lang.String <B>name</B></PRE> |
| <DL> |
| <DD>Name of the column. |
| <P> |
| <DD><DL> |
| </DL> |
| </DD> |
| <DD><DL> |
| |
| <DT><B>Returns:</B><DD>the name of the column</DL> |
| <DL> |
| <DT><B>Default:</B><DD>""</DD> |
| </DL> |
| </DL> |
| <HR> |
| |
| <A NAME="target()"><!-- --></A><H3> |
| target</H3> |
| <PRE> |
| public abstract java.lang.String <B>target</B></PRE> |
| <DL> |
| <DD>Target column for this column in the other table when part of a |
| foreign key relation. |
| <P> |
| <DD><DL> |
| </DL> |
| </DD> |
| <DD><DL> |
| |
| <DT><B>Returns:</B><DD>the target column in the other table for this column |
| when part of a foreign key relation.</DL> |
| <DL> |
| <DT><B>Default:</B><DD>""</DD> |
| </DL> |
| </DL> |
| <HR> |
| |
| <A NAME="targetMember()"><!-- --></A><H3> |
| targetMember</H3> |
| <PRE> |
| public abstract java.lang.String <B>targetMember</B></PRE> |
| <DL> |
| <DD>Target member in the other class or interface for this column |
| when part of a bidirectional relation. |
| <P> |
| <DD><DL> |
| </DL> |
| </DD> |
| <DD><DL> |
| |
| <DT><B>Returns:</B><DD>the target member for this column when part of |
| a bidirectional relation.</DL> |
| <DL> |
| <DT><B>Default:</B><DD>""</DD> |
| </DL> |
| </DL> |
| <HR> |
| |
| <A NAME="jdbcType()"><!-- --></A><H3> |
| jdbcType</H3> |
| <PRE> |
| public abstract java.lang.String <B>jdbcType</B></PRE> |
| <DL> |
| <DD>JDBC Type for this column. |
| <P> |
| <DD><DL> |
| </DL> |
| </DD> |
| <DD><DL> |
| |
| <DT><B>Returns:</B><DD>JDBC type for this column</DL> |
| <DL> |
| <DT><B>Default:</B><DD>""</DD> |
| </DL> |
| </DL> |
| <HR> |
| |
| <A NAME="sqlType()"><!-- --></A><H3> |
| sqlType</H3> |
| <PRE> |
| public abstract java.lang.String <B>sqlType</B></PRE> |
| <DL> |
| <DD>SQL Type for this column. |
| <P> |
| <DD><DL> |
| </DL> |
| </DD> |
| <DD><DL> |
| |
| <DT><B>Returns:</B><DD>SQL type for this column</DL> |
| <DL> |
| <DT><B>Default:</B><DD>""</DD> |
| </DL> |
| </DL> |
| <HR> |
| |
| <A NAME="length()"><!-- --></A><H3> |
| length</H3> |
| <PRE> |
| public abstract int <B>length</B></PRE> |
| <DL> |
| <DD>Maximum length of data stored in this column. |
| <P> |
| <DD><DL> |
| </DL> |
| </DD> |
| <DD><DL> |
| |
| <DT><B>Returns:</B><DD>the maximum length of data stored in this column</DL> |
| <DL> |
| <DT><B>Default:</B><DD>-1</DD> |
| </DL> |
| </DL> |
| <HR> |
| |
| <A NAME="scale()"><!-- --></A><H3> |
| scale</H3> |
| <PRE> |
| public abstract int <B>scale</B></PRE> |
| <DL> |
| <DD>Scale for the column when handling floating point values. |
| <P> |
| <DD><DL> |
| </DL> |
| </DD> |
| <DD><DL> |
| |
| <DT><B>Returns:</B><DD>the scale for the column when handling floating point values</DL> |
| <DL> |
| <DT><B>Default:</B><DD>-1</DD> |
| </DL> |
| </DL> |
| <HR> |
| |
| <A NAME="allowsNull()"><!-- --></A><H3> |
| allowsNull</H3> |
| <PRE> |
| public abstract java.lang.String <B>allowsNull</B></PRE> |
| <DL> |
| <DD>Whether the column allows null values to be inserted. |
| <P> |
| <DD><DL> |
| </DL> |
| </DD> |
| <DD><DL> |
| |
| <DT><B>Returns:</B><DD>whether the column allows null values to be inserted</DL> |
| <DL> |
| <DT><B>Default:</B><DD>""</DD> |
| </DL> |
| </DL> |
| <HR> |
| |
| <A NAME="defaultValue()"><!-- --></A><H3> |
| defaultValue</H3> |
| <PRE> |
| public abstract java.lang.String <B>defaultValue</B></PRE> |
| <DL> |
| <DD>Default value for this column. |
| <P> |
| <DD><DL> |
| </DL> |
| </DD> |
| <DD><DL> |
| |
| <DT><B>Returns:</B><DD>the default value for this column</DL> |
| <DL> |
| <DT><B>Default:</B><DD>""</DD> |
| </DL> |
| </DL> |
| <HR> |
| |
| <A NAME="insertValue()"><!-- --></A><H3> |
| insertValue</H3> |
| <PRE> |
| public abstract java.lang.String <B>insertValue</B></PRE> |
| <DL> |
| <DD>Value to be inserted when this is an "unmapped" column |
| <P> |
| <DD><DL> |
| </DL> |
| </DD> |
| <DD><DL> |
| |
| <DT><B>Returns:</B><DD>the value to be inserted when this is an "unmapped" column</DL> |
| <DL> |
| <DT><B>Default:</B><DD>""</DD> |
| </DL> |
| </DL> |
| <HR> |
| |
| <A NAME="extensions()"><!-- --></A><H3> |
| extensions</H3> |
| <PRE> |
| public abstract <A HREF="../../../javax/jdo/annotations/Extension.html" title="annotation in javax.jdo.annotations">Extension</A>[] <B>extensions</B></PRE> |
| <DL> |
| <DD>Vendor extensions. |
| <P> |
| <DD><DL> |
| </DL> |
| </DD> |
| <DD><DL> |
| |
| <DT><B>Returns:</B><DD>the vendor extensions</DL> |
| <DL> |
| <DT><B>Default:</B><DD>{}</DD> |
| </DL> |
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