column.html

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<A NAME="unique()"><!-- --></A><H3>
unique</H3>
<PRE>
public abstract boolean <B>unique</B></PRE>
<DL>
<DD>(Optional) Whether the property is a unique key.  This is a 
 shortcut for the UniqueConstraint annotation at the table 
 level and is useful for when the unique key constraint is 
 only a single field. This constraint applies in addition 
 to any constraint entailed by primary key mapping and 
 to constraints specified at the table level.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
<DL>
<DT><B>Default:</B><DD>false</DD>
</DL>
</DL>
<HR>

<A NAME="nullable()"><!-- --></A><H3>
nullable</H3>
<PRE>
public abstract boolean <B>nullable</B></PRE>
<DL>
<DD>(Optional) Whether the database column is nullable.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
<DL>
<DT><B>Default:</B><DD>true</DD>
</DL>
</DL>
<HR>

<A NAME="insertable()"><!-- --></A><H3>
insertable</H3>
<PRE>
public abstract boolean <B>insertable</B></PRE>
<DL>
<DD>(Optional) Whether the column is included in SQL INSERT 
 statements generated by the persistence provider.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
<DL>
<DT><B>Default:</B><DD>true</DD>
</DL>
</DL>
<HR>

<A NAME="updatable()"><!-- --></A><H3>
updatable</H3>
<PRE>
public abstract boolean <B>updatable</B></PRE>
<DL>
<DD>(Optional) Whether the column is included in SQL UPDATE 
 statements generated by the persistence provider.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
<DL>
<DT><B>Default:</B><DD>true</DD>
</DL>
</DL>
<HR>

<A NAME="columnDefinition()"><!-- --></A><H3>
columnDefinition</H3>
<PRE>
public abstract <A HREF="http://java.sun.com/j2se/1.5/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> <B>columnDefinition</B></PRE>
<DL>
<DD>(Optional) The SQL fragment that is used when 
 generating the DDL for the column.
 <p> Defaults to the generated SQL to create a
 column of the inferred type.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
<DL>
<DT><B>Default:</B><DD>""</DD>
</DL>
</DL>
<HR>

<A NAME="table()"><!-- --></A><H3>
table</H3>
<PRE>
public abstract <A HREF="http://java.sun.com/j2se/1.5/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> <B>table</B></PRE>
<DL>
<DD>(Optional) The name of the table that contains the column. 
 If absent the column is assumed to be in the primary table.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</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>(Optional) The column length. (Applies only if a
 string-valued column is used.)
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
<DL>
<DT><B>Default:</B><DD>255</DD>
</DL>
</DL>
<HR>

<A NAME="precision()"><!-- --></A><H3>
precision</H3>
<PRE>
public abstract int <B>precision</B></PRE>
<DL>
<DD>(Optional) The precision for a decimal (exact numeric) 
 column. (Applies only if a decimal column is used.)
 Value must be set by developer if used when generating 
 the DDL for the column.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
<DL>
<DT><B>Default:</B><DD>0</DD>
</DL>
</DL>
<HR>

<A NAME="scale()"><!-- --></A><H3>
scale</H3>
<PRE>
public abstract int <B>scale</B></PRE>
<DL>
<DD>(Optional) The scale for a decimal (exact numeric) column. 
 (Applies only if a decimal column is used.)
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
<DL>
<DT><B>Default:</B><DD>0</DD>
</DL>
</DL>
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