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Query (Cayenne API Documentation - v.1.2)
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org.objectstyle.cayenne.query</FONT>
<BR>
Interface Query</H2>
<DL>
<DT><B>All Superinterfaces:</B> <DD>java.io.Serializable</DD>
</DL>
<DL>
<DT><B>All Known Subinterfaces:</B> <DD><A HREF="../../../../org/objectstyle/cayenne/query/GenericSelectQuery.html" title="interface in org.objectstyle.cayenne.query">GenericSelectQuery</A>, <A HREF="../../../../org/objectstyle/cayenne/query/ParameterizedQuery.html" title="interface in org.objectstyle.cayenne.query">ParameterizedQuery</A></DD>
</DL>
<DL>
<DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../../../org/objectstyle/cayenne/query/AbstractQuery.html" title="class in org.objectstyle.cayenne.query">AbstractQuery</A>, <A HREF="../../../../org/objectstyle/cayenne/query/BatchQuery.html" title="class in org.objectstyle.cayenne.query">BatchQuery</A>, <A HREF="../../../../org/objectstyle/cayenne/query/DeleteBatchQuery.html" title="class in org.objectstyle.cayenne.query">DeleteBatchQuery</A>, <A HREF="../../../../org/objectstyle/cayenne/query/DeleteQuery.html" title="class in org.objectstyle.cayenne.query">DeleteQuery</A>, <A HREF="../../../../org/objectstyle/cayenne/wocompat/EOQuery.html" title="class in org.objectstyle.cayenne.wocompat">EOQuery</A>, <A HREF="../../../../org/objectstyle/cayenne/wocompat/EOSQLQuery.html" title="class in org.objectstyle.cayenne.wocompat">EOSQLQuery</A>, <A HREF="../../../../org/objectstyle/cayenne/query/IndirectQuery.html" title="class in org.objectstyle.cayenne.query">IndirectQuery</A>, <A HREF="../../../../org/objectstyle/cayenne/query/InsertBatchQuery.html" title="class in org.objectstyle.cayenne.query">InsertBatchQuery</A>, <A HREF="../../../../org/objectstyle/cayenne/query/InsertQuery.html" title="class in org.objectstyle.cayenne.query">InsertQuery</A>, <A HREF="../../../../org/objectstyle/cayenne/query/NamedQuery.html" title="class in org.objectstyle.cayenne.query">NamedQuery</A>, <A HREF="../../../../org/objectstyle/cayenne/query/ObjectIdQuery.html" title="class in org.objectstyle.cayenne.query">ObjectIdQuery</A>, <A HREF="../../../../org/objectstyle/cayenne/query/PrefetchSelectQuery.html" title="class in org.objectstyle.cayenne.query">PrefetchSelectQuery</A>, <A HREF="../../../../org/objectstyle/cayenne/query/ProcedureQuery.html" title="class in org.objectstyle.cayenne.query">ProcedureQuery</A>, <A HREF="../../../../org/objectstyle/cayenne/query/QualifiedQuery.html" title="class in org.objectstyle.cayenne.query">QualifiedQuery</A>, <A HREF="../../../../org/objectstyle/cayenne/query/QueryChain.html" title="class in org.objectstyle.cayenne.query">QueryChain</A>, <A HREF="../../../../org/objectstyle/cayenne/query/RelationshipQuery.html" title="class in org.objectstyle.cayenne.query">RelationshipQuery</A>, <A HREF="../../../../org/objectstyle/cayenne/query/SelectQuery.html" title="class in org.objectstyle.cayenne.query">SelectQuery</A>, <A HREF="../../../../org/objectstyle/cayenne/query/SQLTemplate.html" title="class in org.objectstyle.cayenne.query">SQLTemplate</A>, <A HREF="../../../../org/objectstyle/cayenne/query/UpdateBatchQuery.html" title="class in org.objectstyle.cayenne.query">UpdateBatchQuery</A>, <A HREF="../../../../org/objectstyle/cayenne/query/UpdateQuery.html" title="class in org.objectstyle.cayenne.query">UpdateQuery</A></DD>
</DL>
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<DT><PRE>public interface <B>Query</B><DT>extends java.io.Serializable</DL>
</PRE>
<P>
Defines minimal API of a query descriptor that is executable via Cayenne.
<P>
<P>
<DL>
<DT><B>Author:</B></DT>
<DD>Andrus Adamchik</DD>
</DL>
<HR>
<P>
<!-- ========== METHOD SUMMARY =========== -->
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<B>Method Summary</B></FONT></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../org/objectstyle/cayenne/query/SQLAction.html" title="interface in org.objectstyle.cayenne.query">SQLAction</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/objectstyle/cayenne/query/Query.html#createSQLAction(org.objectstyle.cayenne.query.SQLActionVisitor)">createSQLAction</A></B>(<A HREF="../../../../org/objectstyle/cayenne/query/SQLActionVisitor.html" title="interface in org.objectstyle.cayenne.query">SQLActionVisitor</A>&nbsp;visitor)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A callback method invoked by Cayenne during the final execution phase of the query
run.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../org/objectstyle/cayenne/query/QueryMetadata.html" title="interface in org.objectstyle.cayenne.query">QueryMetadata</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/objectstyle/cayenne/query/Query.html#getMetaData(org.objectstyle.cayenne.map.EntityResolver)">getMetaData</A></B>(<A HREF="../../../../org/objectstyle/cayenne/map/EntityResolver.html" title="class in org.objectstyle.cayenne.map">EntityResolver</A>&nbsp;resolver)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns query runtime parameters.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/objectstyle/cayenne/query/Query.html#getName()">getName</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns a symbolic name of the query.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;java.lang.Object</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/objectstyle/cayenne/query/Query.html#getRoot()">getRoot</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>since 1.2. Query "root" is now accessed via
<A HREF="../../../../org/objectstyle/cayenne/query/Query.html#getMetaData(org.objectstyle.cayenne.map.EntityResolver)"><CODE>getMetaData(EntityResolver)</CODE></A>.</I></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/objectstyle/cayenne/query/Query.html#route(org.objectstyle.cayenne.query.QueryRouter, org.objectstyle.cayenne.map.EntityResolver, org.objectstyle.cayenne.query.Query)">route</A></B>(<A HREF="../../../../org/objectstyle/cayenne/query/QueryRouter.html" title="interface in org.objectstyle.cayenne.query">QueryRouter</A>&nbsp;router,
<A HREF="../../../../org/objectstyle/cayenne/map/EntityResolver.html" title="class in org.objectstyle.cayenne.map">EntityResolver</A>&nbsp;resolver,
<A HREF="../../../../org/objectstyle/cayenne/query/Query.html" title="interface in org.objectstyle.cayenne.query">Query</A>&nbsp;substitutedQuery)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A callback method invoked by Cayenne during the routing phase of the query
execution.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/objectstyle/cayenne/query/Query.html#setName(java.lang.String)">setName</A></B>(java.lang.String&nbsp;name)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>since 1.2</I></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/objectstyle/cayenne/query/Query.html#setRoot(java.lang.Object)">setRoot</A></B>(java.lang.Object&nbsp;root)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>since 1.2. Query "root" is now accessed via
<A HREF="../../../../org/objectstyle/cayenne/query/Query.html#getMetaData(org.objectstyle.cayenne.map.EntityResolver)"><CODE>getMetaData(EntityResolver)</CODE></A>.</I></TD>
</TR>
</TABLE>
&nbsp;
<P>
<!-- ============ METHOD DETAIL ========== -->
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<B>Method Detail</B></FONT></TH>
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<A NAME="getMetaData(org.objectstyle.cayenne.map.EntityResolver)"><!-- --></A><H3>
getMetaData</H3>
<PRE>
<A HREF="../../../../org/objectstyle/cayenne/query/QueryMetadata.html" title="interface in org.objectstyle.cayenne.query">QueryMetadata</A> <B>getMetaData</B>(<A HREF="../../../../org/objectstyle/cayenne/map/EntityResolver.html" title="class in org.objectstyle.cayenne.map">EntityResolver</A>&nbsp;resolver)</PRE>
<DL>
<DD>Returns query runtime parameters. The method is called at various stages of the
execution by Cayenne access stack to retrieve query parameters. EntityResolver
instance is passed to this method, meaning that the query doesn't need to store
direct references to Cayenne mapping objects and can resolve them at runtime.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Since:</B></DT>
<DD>1.2</DD>
</DL>
</DD>
</DL>
<HR>
<A NAME="route(org.objectstyle.cayenne.query.QueryRouter, org.objectstyle.cayenne.map.EntityResolver, org.objectstyle.cayenne.query.Query)"><!-- --></A><H3>
route</H3>
<PRE>
void <B>route</B>(<A HREF="../../../../org/objectstyle/cayenne/query/QueryRouter.html" title="interface in org.objectstyle.cayenne.query">QueryRouter</A>&nbsp;router,
<A HREF="../../../../org/objectstyle/cayenne/map/EntityResolver.html" title="class in org.objectstyle.cayenne.map">EntityResolver</A>&nbsp;resolver,
<A HREF="../../../../org/objectstyle/cayenne/query/Query.html" title="interface in org.objectstyle.cayenne.query">Query</A>&nbsp;substitutedQuery)</PRE>
<DL>
<DD>A callback method invoked by Cayenne during the routing phase of the query
execution. Mapping of DataNodes is provided by QueryRouter. Query should use a
<A HREF="../../../../org/objectstyle/cayenne/query/QueryRouter.html#route(org.objectstyle.cayenne.access.QueryEngine, org.objectstyle.cayenne.query.Query, org.objectstyle.cayenne.query.Query)"><CODE>QueryRouter.route(QueryEngine, Query, Query)</CODE></A> callback method to route
itself. Query can create one or more substitute queries or even provide its own
QueryEngine to execute itself.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Since:</B></DT>
<DD>1.2</DD>
</DL>
</DD>
</DL>
<HR>
<A NAME="createSQLAction(org.objectstyle.cayenne.query.SQLActionVisitor)"><!-- --></A><H3>
createSQLAction</H3>
<PRE>
<A HREF="../../../../org/objectstyle/cayenne/query/SQLAction.html" title="interface in org.objectstyle.cayenne.query">SQLAction</A> <B>createSQLAction</B>(<A HREF="../../../../org/objectstyle/cayenne/query/SQLActionVisitor.html" title="interface in org.objectstyle.cayenne.query">SQLActionVisitor</A>&nbsp;visitor)</PRE>
<DL>
<DD>A callback method invoked by Cayenne during the final execution phase of the query
run. A concrete query implementation is given a chance to decide how it should be
handled. Implementors can pick an appropriate method of the SQLActionVisitor to
handle itself, create a custom SQLAction of its own, or substitute itself with
another query that should be used for SQLAction construction.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Since:</B></DT>
<DD>1.2</DD>
</DL>
</DD>
</DL>
<HR>
<A NAME="getName()"><!-- --></A><H3>
getName</H3>
<PRE>
java.lang.String <B>getName</B>()</PRE>
<DL>
<DD>Returns a symbolic name of the query. The name may be used as a key to find queries
stored in the DataMap. Some query implementors reuse the name as a QueryMetadata
cache key. Generally the name can be null.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Since:</B></DT>
<DD>1.1</DD>
</DL>
</DD>
</DL>
<HR>
<A NAME="setName(java.lang.String)"><!-- --></A><H3>
setName</H3>
<PRE>
void <B>setName</B>(java.lang.String&nbsp;name)</PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<I>since 1.2</I>
<P>
<DD>Sets a symbolic name of the query.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Since:</B></DT>
<DD>1.1</DD>
</DL>
</DD>
</DL>
<HR>
<A NAME="getRoot()"><!-- --></A><H3>
getRoot</H3>
<PRE>
java.lang.Object <B>getRoot</B>()</PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<I>since 1.2. Query "root" is now accessed via
<A HREF="../../../../org/objectstyle/cayenne/query/Query.html#getMetaData(org.objectstyle.cayenne.map.EntityResolver)"><CODE>getMetaData(EntityResolver)</CODE></A>.</I>
<P>
<DD>Returns the root object of the query.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="setRoot(java.lang.Object)"><!-- --></A><H3>
setRoot</H3>
<PRE>
void <B>setRoot</B>(java.lang.Object&nbsp;root)</PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<I>since 1.2. Query "root" is now accessed via
<A HREF="../../../../org/objectstyle/cayenne/query/Query.html#getMetaData(org.objectstyle.cayenne.map.EntityResolver)"><CODE>getMetaData(EntityResolver)</CODE></A>.</I>
<P>
<DD>Sets the root of the query.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
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