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| <H2> |
| <FONT SIZE="-1"> |
| org.apache.openjpa.jdbc.meta</FONT> |
| <BR> |
| Interface ValueHandler</H2> |
| <DL> |
| <DT><B>All Superinterfaces:</B> <DD><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/Serializable.html" title="class or interface in java.io">Serializable</A></DD> |
| </DL> |
| <DL> |
| <DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../../../../org/apache/openjpa/jdbc/meta/strats/AbstractValueHandler.html" title="class in org.apache.openjpa.jdbc.meta.strats">AbstractValueHandler</A>, <A HREF="../../../../../org/apache/openjpa/jdbc/meta/strats/BlobValueHandler.html" title="class in org.apache.openjpa.jdbc.meta.strats">BlobValueHandler</A>, <A HREF="../../../../../org/apache/openjpa/jdbc/meta/strats/ByteArrayValueHandler.html" title="class in org.apache.openjpa.jdbc.meta.strats">ByteArrayValueHandler</A>, <A HREF="../../../../../org/apache/openjpa/jdbc/meta/strats/CharArrayStreamValueHandler.html" title="class in org.apache.openjpa.jdbc.meta.strats">CharArrayStreamValueHandler</A>, <A HREF="../../../../../org/apache/openjpa/jdbc/meta/strats/CharArrayValueHandler.html" title="class in org.apache.openjpa.jdbc.meta.strats">CharArrayValueHandler</A>, <A HREF="../../../../../org/apache/openjpa/jdbc/meta/strats/ClobValueHandler.html" title="class in org.apache.openjpa.jdbc.meta.strats">ClobValueHandler</A>, <A HREF="../../../../../org/apache/openjpa/jdbc/meta/strats/EmbedValueHandler.html" title="class in org.apache.openjpa.jdbc.meta.strats">EmbedValueHandler</A>, <A HREF="../../../../../org/apache/openjpa/jdbc/meta/strats/EnumValueHandler.html" title="class in org.apache.openjpa.jdbc.meta.strats">EnumValueHandler</A>, <A HREF="../../../../../org/apache/openjpa/jdbc/meta/strats/ImmutableValueHandler.html" title="class in org.apache.openjpa.jdbc.meta.strats">ImmutableValueHandler</A>, <A HREF="../../../../../org/apache/openjpa/jdbc/meta/strats/ObjectIdValueHandler.html" title="class in org.apache.openjpa.jdbc.meta.strats">ObjectIdValueHandler</A>, <A HREF="../../../../../org/apache/openjpa/jdbc/meta/strats/UntypedPCValueHandler.html" title="class in org.apache.openjpa.jdbc.meta.strats">UntypedPCValueHandler</A>, <A HREF="../../../../../org/apache/openjpa/jdbc/meta/strats/XMLValueHandler.html" title="class in org.apache.openjpa.jdbc.meta.strats">XMLValueHandler</A></DD> |
| </DL> |
| <HR> |
| <DL> |
| <DT><PRE>public interface <B>ValueHandler</B><DT>extends <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/Serializable.html" title="class or interface in java.io">Serializable</A></DL> |
| </PRE> |
| |
| <P> |
| Maps a value to a relational schema. Value handler are stateless. |
| <P> |
| |
| <P> |
| <DL> |
| <DT><B>Since:</B></DT> |
| <DD>0.4.0</DD> |
| <DT><B>Author:</B></DT> |
| <DD>Abe White</DD> |
| </DL> |
| <HR> |
| |
| <P> |
| |
| <!-- ========== METHOD SUMMARY =========== --> |
| |
| <A NAME="method_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>Method Summary</B></FONT></TH> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE> <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/openjpa/jdbc/meta/ValueHandler.html#getResultArgument(org.apache.openjpa.jdbc.meta.ValueMapping)">getResultArgument</A></B>(<A HREF="../../../../../org/apache/openjpa/jdbc/meta/ValueMapping.html" title="interface in org.apache.openjpa.jdbc.meta">ValueMapping</A> vm)</CODE> |
| |
| <BR> |
| Return the argument to pass to the result set when loading data |
| via <A HREF="../../../../../org/apache/openjpa/jdbc/sql/Result.html#getObject(java.lang.Object, int, java.lang.Object)"><CODE>Result.getObject(java.lang.Object, int, java.lang.Object)</CODE></A>, or null if none.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE> boolean</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/openjpa/jdbc/meta/ValueHandler.html#isVersionable(org.apache.openjpa.jdbc.meta.ValueMapping)">isVersionable</A></B>(<A HREF="../../../../../org/apache/openjpa/jdbc/meta/ValueMapping.html" title="interface in org.apache.openjpa.jdbc.meta">ValueMapping</A> vm)</CODE> |
| |
| <BR> |
| Return whether the values managed by this handler can be used in |
| state image versioning.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE> <A HREF="../../../../../org/apache/openjpa/jdbc/schema/Column.html" title="class in org.apache.openjpa.jdbc.schema">Column</A>[]</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/openjpa/jdbc/meta/ValueHandler.html#map(org.apache.openjpa.jdbc.meta.ValueMapping, java.lang.String, org.apache.openjpa.jdbc.schema.ColumnIO, boolean)">map</A></B>(<A HREF="../../../../../org/apache/openjpa/jdbc/meta/ValueMapping.html" title="interface in org.apache.openjpa.jdbc.meta">ValueMapping</A> vm, |
| <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> name, |
| <A HREF="../../../../../org/apache/openjpa/jdbc/schema/ColumnIO.html" title="class in org.apache.openjpa.jdbc.schema">ColumnIO</A> io, |
| boolean adapt)</CODE> |
| |
| <BR> |
| Map the given value and return all mapped columns, or simply return an |
| array of unmapped default columns.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE> boolean</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/openjpa/jdbc/meta/ValueHandler.html#objectValueRequiresLoad(org.apache.openjpa.jdbc.meta.ValueMapping)">objectValueRequiresLoad</A></B>(<A HREF="../../../../../org/apache/openjpa/jdbc/meta/ValueMapping.html" title="interface in org.apache.openjpa.jdbc.meta">ValueMapping</A> vm)</CODE> |
| |
| <BR> |
| Return whether this handler potentially must load extra data to extract |
| the object value from its datastore representation.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE> <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/openjpa/jdbc/meta/ValueHandler.html#toDataStoreValue(org.apache.openjpa.jdbc.meta.ValueMapping, java.lang.Object, org.apache.openjpa.jdbc.kernel.JDBCStore)">toDataStoreValue</A></B>(<A HREF="../../../../../org/apache/openjpa/jdbc/meta/ValueMapping.html" title="interface in org.apache.openjpa.jdbc.meta">ValueMapping</A> vm, |
| <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> val, |
| <A HREF="../../../../../org/apache/openjpa/jdbc/kernel/JDBCStore.html" title="interface in org.apache.openjpa.jdbc.kernel">JDBCStore</A> store)</CODE> |
| |
| <BR> |
| Translate the given value to its datastore equivalent.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE> <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/openjpa/jdbc/meta/ValueHandler.html#toObjectValue(org.apache.openjpa.jdbc.meta.ValueMapping, java.lang.Object)">toObjectValue</A></B>(<A HREF="../../../../../org/apache/openjpa/jdbc/meta/ValueMapping.html" title="interface in org.apache.openjpa.jdbc.meta">ValueMapping</A> vm, |
| <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> val)</CODE> |
| |
| <BR> |
| Translate the given datastore value into its Java equivalent.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE> <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/openjpa/jdbc/meta/ValueHandler.html#toObjectValue(org.apache.openjpa.jdbc.meta.ValueMapping, java.lang.Object, org.apache.openjpa.kernel.OpenJPAStateManager, org.apache.openjpa.jdbc.kernel.JDBCStore, org.apache.openjpa.jdbc.kernel.JDBCFetchConfiguration)">toObjectValue</A></B>(<A HREF="../../../../../org/apache/openjpa/jdbc/meta/ValueMapping.html" title="interface in org.apache.openjpa.jdbc.meta">ValueMapping</A> vm, |
| <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> val, |
| <A HREF="../../../../../org/apache/openjpa/kernel/OpenJPAStateManager.html" title="interface in org.apache.openjpa.kernel">OpenJPAStateManager</A> sm, |
| <A HREF="../../../../../org/apache/openjpa/jdbc/kernel/JDBCStore.html" title="interface in org.apache.openjpa.jdbc.kernel">JDBCStore</A> store, |
| <A HREF="../../../../../org/apache/openjpa/jdbc/kernel/JDBCFetchConfiguration.html" title="interface in org.apache.openjpa.jdbc.kernel">JDBCFetchConfiguration</A> fetch)</CODE> |
| |
| <BR> |
| Translate the given datastore value into its Java equivalent.</TD> |
| </TR> |
| </TABLE> |
| |
| <P> |
| |
| <!-- ============ METHOD DETAIL ========== --> |
| |
| <A NAME="method_detail"><!-- --></A> |
| <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
| <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
| <TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"> |
| <B>Method Detail</B></FONT></TH> |
| </TR> |
| </TABLE> |
| |
| <A NAME="map(org.apache.openjpa.jdbc.meta.ValueMapping, java.lang.String, org.apache.openjpa.jdbc.schema.ColumnIO, boolean)"><!-- --></A><H3> |
| map</H3> |
| <PRE> |
| <A HREF="../../../../../org/apache/openjpa/jdbc/schema/Column.html" title="class in org.apache.openjpa.jdbc.schema">Column</A>[] <B>map</B>(<A HREF="../../../../../org/apache/openjpa/jdbc/meta/ValueMapping.html" title="interface in org.apache.openjpa.jdbc.meta">ValueMapping</A> vm, |
| <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> name, |
| <A HREF="../../../../../org/apache/openjpa/jdbc/schema/ColumnIO.html" title="class in org.apache.openjpa.jdbc.schema">ColumnIO</A> io, |
| boolean adapt)</PRE> |
| <DL> |
| <DD>Map the given value and return all mapped columns, or simply return an |
| array of unmapped default columns. The columns should have at least |
| their <code>Name</code> and <code>JavaType</code> properties set. |
| <P> |
| <DD><DL> |
| </DL> |
| </DD> |
| <DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>name</CODE> - use as a base to form column name(s); the column names |
| of unmapped columns will automatically be made to fit |
| database limitations<DD><CODE>io</CODE> - I/O information about mapped columns; you do not |
| have to set this information if returning templates<DD><CODE>adapt</CODE> - whether to adapt the mapping or schema</DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="isVersionable(org.apache.openjpa.jdbc.meta.ValueMapping)"><!-- --></A><H3> |
| isVersionable</H3> |
| <PRE> |
| boolean <B>isVersionable</B>(<A HREF="../../../../../org/apache/openjpa/jdbc/meta/ValueMapping.html" title="interface in org.apache.openjpa.jdbc.meta">ValueMapping</A> vm)</PRE> |
| <DL> |
| <DD>Return whether the values managed by this handler can be used in |
| state image versioning. |
| <P> |
| <DD><DL> |
| </DL> |
| </DD> |
| <DD><DL> |
| </DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="objectValueRequiresLoad(org.apache.openjpa.jdbc.meta.ValueMapping)"><!-- --></A><H3> |
| objectValueRequiresLoad</H3> |
| <PRE> |
| boolean <B>objectValueRequiresLoad</B>(<A HREF="../../../../../org/apache/openjpa/jdbc/meta/ValueMapping.html" title="interface in org.apache.openjpa.jdbc.meta">ValueMapping</A> vm)</PRE> |
| <DL> |
| <DD>Return whether this handler potentially must load extra data to extract |
| the object value from its datastore representation. |
| <P> |
| <DD><DL> |
| </DL> |
| </DD> |
| <DD><DL> |
| </DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="getResultArgument(org.apache.openjpa.jdbc.meta.ValueMapping)"><!-- --></A><H3> |
| getResultArgument</H3> |
| <PRE> |
| <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> <B>getResultArgument</B>(<A HREF="../../../../../org/apache/openjpa/jdbc/meta/ValueMapping.html" title="interface in org.apache.openjpa.jdbc.meta">ValueMapping</A> vm)</PRE> |
| <DL> |
| <DD>Return the argument to pass to the result set when loading data |
| via <A HREF="../../../../../org/apache/openjpa/jdbc/sql/Result.html#getObject(java.lang.Object, int, java.lang.Object)"><CODE>Result.getObject(java.lang.Object, int, java.lang.Object)</CODE></A>, or null if none. If this value |
| occupies multiple columns, return an array with one element per |
| column. You may return null if all array elements would be null. |
| <P> |
| <DD><DL> |
| </DL> |
| </DD> |
| <DD><DL> |
| </DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="toDataStoreValue(org.apache.openjpa.jdbc.meta.ValueMapping, java.lang.Object, org.apache.openjpa.jdbc.kernel.JDBCStore)"><!-- --></A><H3> |
| toDataStoreValue</H3> |
| <PRE> |
| <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> <B>toDataStoreValue</B>(<A HREF="../../../../../org/apache/openjpa/jdbc/meta/ValueMapping.html" title="interface in org.apache.openjpa.jdbc.meta">ValueMapping</A> vm, |
| <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> val, |
| <A HREF="../../../../../org/apache/openjpa/jdbc/kernel/JDBCStore.html" title="interface in org.apache.openjpa.jdbc.kernel">JDBCStore</A> store)</PRE> |
| <DL> |
| <DD>Translate the given value to its datastore equivalent. If this value |
| occupies multiple columns, return an object array with one element |
| per column. For relation id columns, return the state manager |
| the column depends on. |
| <P> |
| <DD><DL> |
| </DL> |
| </DD> |
| <DD><DL> |
| </DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="toObjectValue(org.apache.openjpa.jdbc.meta.ValueMapping, java.lang.Object)"><!-- --></A><H3> |
| toObjectValue</H3> |
| <PRE> |
| <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> <B>toObjectValue</B>(<A HREF="../../../../../org/apache/openjpa/jdbc/meta/ValueMapping.html" title="interface in org.apache.openjpa.jdbc.meta">ValueMapping</A> vm, |
| <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> val)</PRE> |
| <DL> |
| <DD>Translate the given datastore value into its Java equivalent. If |
| the value occupies multiple columns, the given object will be an object |
| array with one entry per column. This method is only called if |
| <A HREF="../../../../../org/apache/openjpa/jdbc/meta/ValueHandler.html#objectValueRequiresLoad(org.apache.openjpa.jdbc.meta.ValueMapping)"><CODE>objectValueRequiresLoad(org.apache.openjpa.jdbc.meta.ValueMapping)</CODE></A> returns false. |
| <P> |
| <DD><DL> |
| </DL> |
| </DD> |
| <DD><DL> |
| </DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="toObjectValue(org.apache.openjpa.jdbc.meta.ValueMapping, java.lang.Object, org.apache.openjpa.kernel.OpenJPAStateManager, org.apache.openjpa.jdbc.kernel.JDBCStore, org.apache.openjpa.jdbc.kernel.JDBCFetchConfiguration)"><!-- --></A><H3> |
| toObjectValue</H3> |
| <PRE> |
| <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> <B>toObjectValue</B>(<A HREF="../../../../../org/apache/openjpa/jdbc/meta/ValueMapping.html" title="interface in org.apache.openjpa.jdbc.meta">ValueMapping</A> vm, |
| <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> val, |
| <A HREF="../../../../../org/apache/openjpa/kernel/OpenJPAStateManager.html" title="interface in org.apache.openjpa.kernel">OpenJPAStateManager</A> sm, |
| <A HREF="../../../../../org/apache/openjpa/jdbc/kernel/JDBCStore.html" title="interface in org.apache.openjpa.jdbc.kernel">JDBCStore</A> store, |
| <A HREF="../../../../../org/apache/openjpa/jdbc/kernel/JDBCFetchConfiguration.html" title="interface in org.apache.openjpa.jdbc.kernel">JDBCFetchConfiguration</A> fetch) |
| throws <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/sql/SQLException.html" title="class or interface in java.sql">SQLException</A></PRE> |
| <DL> |
| <DD>Translate the given datastore value into its Java equivalent. If |
| the value occupies multiple columns, the given object will be an object |
| array with one entry per column. This method is only called if |
| <A HREF="../../../../../org/apache/openjpa/jdbc/meta/ValueHandler.html#objectValueRequiresLoad(org.apache.openjpa.jdbc.meta.ValueMapping)"><CODE>objectValueRequiresLoad(org.apache.openjpa.jdbc.meta.ValueMapping)</CODE></A> returns true. |
| <P> |
| <DD><DL> |
| </DL> |
| </DD> |
| <DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>sm</CODE> - the state manager that owns the value; may be null if |
| loading a projection |
| <DT><B>Throws:</B> |
| <DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/sql/SQLException.html" title="class or interface in java.sql">SQLException</A></CODE></DL> |
| </DD> |
| </DL> |
| <!-- ========= END OF CLASS DATA ========= --> |
| <HR> |
| |
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