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QueryHints (OpenJPA Parent POM 2.3.0 API) | |
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org.apache.openjpa.kernel</FONT> | |
<BR> | |
Interface QueryHints</H2> | |
<HR> | |
<DL> | |
<DT><PRE>public interface <B>QueryHints</B></DL> | |
</PRE> | |
<P> | |
Standard query hint keys. | |
<P> | |
<P> | |
<HR> | |
<P> | |
<!-- =========== FIELD SUMMARY =========== --> | |
<A NAME="field_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>Field Summary</B></FONT></TH> | |
</TR> | |
<TR BGCOLOR="white" CLASS="TableRowColor"> | |
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> | |
<CODE>static <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD> | |
<TD><CODE><B><A HREF="../../../../org/apache/openjpa/kernel/QueryHints.html#HINT_AGGREGATE_LISTENER">HINT_AGGREGATE_LISTENER</A></B></CODE> | |
<BR> | |
</TD> | |
</TR> | |
<TR BGCOLOR="white" CLASS="TableRowColor"> | |
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> | |
<CODE>static <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD> | |
<TD><CODE><B><A HREF="../../../../org/apache/openjpa/kernel/QueryHints.html#HINT_AGGREGATE_LISTENERS">HINT_AGGREGATE_LISTENERS</A></B></CODE> | |
<BR> | |
</TD> | |
</TR> | |
<TR BGCOLOR="white" CLASS="TableRowColor"> | |
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> | |
<CODE>static <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD> | |
<TD><CODE><B><A HREF="../../../../org/apache/openjpa/kernel/QueryHints.html#HINT_FILTER_LISTENER">HINT_FILTER_LISTENER</A></B></CODE> | |
<BR> | |
</TD> | |
</TR> | |
<TR BGCOLOR="white" CLASS="TableRowColor"> | |
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> | |
<CODE>static <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD> | |
<TD><CODE><B><A HREF="../../../../org/apache/openjpa/kernel/QueryHints.html#HINT_FILTER_LISTENERS">HINT_FILTER_LISTENERS</A></B></CODE> | |
<BR> | |
</TD> | |
</TR> | |
<TR BGCOLOR="white" CLASS="TableRowColor"> | |
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> | |
<CODE>static <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD> | |
<TD><CODE><B><A HREF="../../../../org/apache/openjpa/kernel/QueryHints.html#HINT_IGNORE_FINDER">HINT_IGNORE_FINDER</A></B></CODE> | |
<BR> | |
A directive to ignore any cached finder query for find() operation.</TD> | |
</TR> | |
<TR BGCOLOR="white" CLASS="TableRowColor"> | |
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> | |
<CODE>static <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD> | |
<TD><CODE><B><A HREF="../../../../org/apache/openjpa/kernel/QueryHints.html#HINT_IGNORE_PREPARED_QUERY">HINT_IGNORE_PREPARED_QUERY</A></B></CODE> | |
<BR> | |
A directive to ignore any prepared SQL that might have been cached | |
against a JPQL query.</TD> | |
</TR> | |
<TR BGCOLOR="white" CLASS="TableRowColor"> | |
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> | |
<CODE>static <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD> | |
<TD><CODE><B><A HREF="../../../../org/apache/openjpa/kernel/QueryHints.html#HINT_INVALIDATE_FINDER">HINT_INVALIDATE_FINDER</A></B></CODE> | |
<BR> | |
A directive to invalidate any cached finder query.</TD> | |
</TR> | |
<TR BGCOLOR="white" CLASS="TableRowColor"> | |
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> | |
<CODE>static <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD> | |
<TD><CODE><B><A HREF="../../../../org/apache/openjpa/kernel/QueryHints.html#HINT_INVALIDATE_PREPARED_QUERY">HINT_INVALIDATE_PREPARED_QUERY</A></B></CODE> | |
<BR> | |
A directive to invalidate any prepared SQL that might have been cached | |
against a JPQL query.</TD> | |
</TR> | |
<TR BGCOLOR="white" CLASS="TableRowColor"> | |
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> | |
<CODE>static <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD> | |
<TD><CODE><B><A HREF="../../../../org/apache/openjpa/kernel/QueryHints.html#HINT_PARAM_MARKER_IN_QUERY">HINT_PARAM_MARKER_IN_QUERY</A></B></CODE> | |
<BR> | |
Hints to signal that the JPQL/SQL query string contains a parameter | |
marker <code>?</TD> | |
</TR> | |
<TR BGCOLOR="white" CLASS="TableRowColor"> | |
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> | |
<CODE>static <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD> | |
<TD><CODE><B><A HREF="../../../../org/apache/openjpa/kernel/QueryHints.html#HINT_RECACHE_FINDER">HINT_RECACHE_FINDER</A></B></CODE> | |
<BR> | |
A directive to overwrite a cached finder query by a new query.</TD> | |
</TR> | |
<TR BGCOLOR="white" CLASS="TableRowColor"> | |
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> | |
<CODE>static <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD> | |
<TD><CODE><B><A HREF="../../../../org/apache/openjpa/kernel/QueryHints.html#HINT_RELAX_BIND_PARAM_TYPE_CHECK">HINT_RELAX_BIND_PARAM_TYPE_CHECK</A></B></CODE> | |
<BR> | |
A boolean directive to relax checking of binding parameter value and the predicate | |
it binds to.</TD> | |
</TR> | |
<TR BGCOLOR="white" CLASS="TableRowColor"> | |
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> | |
<CODE>static <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD> | |
<TD><CODE><B><A HREF="../../../../org/apache/openjpa/kernel/QueryHints.html#HINT_RESULT_COUNT">HINT_RESULT_COUNT</A></B></CODE> | |
<BR> | |
Hint to specify the number of rows to optimize for.</TD> | |
</TR> | |
<TR BGCOLOR="white" CLASS="TableRowColor"> | |
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> | |
<CODE>static <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD> | |
<TD><CODE><B><A HREF="../../../../org/apache/openjpa/kernel/QueryHints.html#HINT_SUBCLASSES">HINT_SUBCLASSES</A></B></CODE> | |
<BR> | |
</TD> | |
</TR> | |
<TR BGCOLOR="white" CLASS="TableRowColor"> | |
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> | |
<CODE>static <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD> | |
<TD><CODE><B><A HREF="../../../../org/apache/openjpa/kernel/QueryHints.html#HINT_USE_LITERAL_IN_SQL">HINT_USE_LITERAL_IN_SQL</A></B></CODE> | |
<BR> | |
A boolean directive to generate literal directly into the SQL statement instead of using position parameter, | |
if possible.</TD> | |
</TR> | |
</TABLE> | |
| |
<P> | |
<!-- ============ FIELD DETAIL =========== --> | |
<A NAME="field_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>Field Detail</B></FONT></TH> | |
</TR> | |
</TABLE> | |
<A NAME="HINT_SUBCLASSES"><!-- --></A><H3> | |
HINT_SUBCLASSES</H3> | |
<PRE> | |
static final <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>HINT_SUBCLASSES</B></PRE> | |
<DL> | |
<DL> | |
<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.openjpa.kernel.QueryHints.HINT_SUBCLASSES">Constant Field Values</A></DL> | |
</DL> | |
<HR> | |
<A NAME="HINT_FILTER_LISTENER"><!-- --></A><H3> | |
HINT_FILTER_LISTENER</H3> | |
<PRE> | |
static final <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>HINT_FILTER_LISTENER</B></PRE> | |
<DL> | |
<DL> | |
<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.openjpa.kernel.QueryHints.HINT_FILTER_LISTENER">Constant Field Values</A></DL> | |
</DL> | |
<HR> | |
<A NAME="HINT_FILTER_LISTENERS"><!-- --></A><H3> | |
HINT_FILTER_LISTENERS</H3> | |
<PRE> | |
static final <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>HINT_FILTER_LISTENERS</B></PRE> | |
<DL> | |
<DL> | |
<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.openjpa.kernel.QueryHints.HINT_FILTER_LISTENERS">Constant Field Values</A></DL> | |
</DL> | |
<HR> | |
<A NAME="HINT_AGGREGATE_LISTENER"><!-- --></A><H3> | |
HINT_AGGREGATE_LISTENER</H3> | |
<PRE> | |
static final <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>HINT_AGGREGATE_LISTENER</B></PRE> | |
<DL> | |
<DL> | |
<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.openjpa.kernel.QueryHints.HINT_AGGREGATE_LISTENER">Constant Field Values</A></DL> | |
</DL> | |
<HR> | |
<A NAME="HINT_AGGREGATE_LISTENERS"><!-- --></A><H3> | |
HINT_AGGREGATE_LISTENERS</H3> | |
<PRE> | |
static final <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>HINT_AGGREGATE_LISTENERS</B></PRE> | |
<DL> | |
<DL> | |
<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.openjpa.kernel.QueryHints.HINT_AGGREGATE_LISTENERS">Constant Field Values</A></DL> | |
</DL> | |
<HR> | |
<A NAME="HINT_RESULT_COUNT"><!-- --></A><H3> | |
HINT_RESULT_COUNT</H3> | |
<PRE> | |
static final <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>HINT_RESULT_COUNT</B></PRE> | |
<DL> | |
<DD>Hint to specify the number of rows to optimize for. | |
<P> | |
<DL> | |
<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.openjpa.kernel.QueryHints.HINT_RESULT_COUNT">Constant Field Values</A></DL> | |
</DL> | |
<HR> | |
<A NAME="HINT_PARAM_MARKER_IN_QUERY"><!-- --></A><H3> | |
HINT_PARAM_MARKER_IN_QUERY</H3> | |
<PRE> | |
static final <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>HINT_PARAM_MARKER_IN_QUERY</B></PRE> | |
<DL> | |
<DD>Hints to signal that the JPQL/SQL query string contains a parameter | |
marker <code>?</code> character. By default, the query string is parsed | |
to count number of parameters assuming that all <code>?</code> characters | |
designate a bind parameter. This assumption makes the parse faster. | |
<P> | |
<DL> | |
<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.openjpa.kernel.QueryHints.HINT_PARAM_MARKER_IN_QUERY">Constant Field Values</A></DL> | |
</DL> | |
<HR> | |
<A NAME="HINT_INVALIDATE_PREPARED_QUERY"><!-- --></A><H3> | |
HINT_INVALIDATE_PREPARED_QUERY</H3> | |
<PRE> | |
static final <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>HINT_INVALIDATE_PREPARED_QUERY</B></PRE> | |
<DL> | |
<DD>A directive to invalidate any prepared SQL that might have been cached | |
against a JPQL query. The target SQL corresponding to a JPQL depends on | |
several context parameters such as fetch configuration, lock mode etc. | |
If a query is executed repeatedly and hence its SQL is cached for faster | |
execution then if any of the contextual parameters change across query | |
execution then the user must supply this hint to invalidate the cached | |
SQL query. | |
The alternative to monitor any such change for automatic invalidation | |
has a constant performance penalty for the frequent use case where a | |
query is repeatedly executed in different persistent context with the | |
same fetch plan or locking. | |
<P> | |
<DL> | |
<DT><B>See Also:</B><DD><A HREF="../../../../org/apache/openjpa/kernel/QueryHints.html#HINT_IGNORE_PREPARED_QUERY"><CODE>HINT_IGNORE_PREPARED_QUERY</CODE></A>, | |
<A HREF="../../../../constant-values.html#org.apache.openjpa.kernel.QueryHints.HINT_INVALIDATE_PREPARED_QUERY">Constant Field Values</A></DL> | |
</DL> | |
<HR> | |
<A NAME="HINT_IGNORE_PREPARED_QUERY"><!-- --></A><H3> | |
HINT_IGNORE_PREPARED_QUERY</H3> | |
<PRE> | |
static final <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>HINT_IGNORE_PREPARED_QUERY</B></PRE> | |
<DL> | |
<DD>A directive to ignore any prepared SQL that might have been cached | |
against a JPQL query. The target SQL corresponding to a JPQL depends on | |
several context parameters such as fetch configuration, lock mode etc. | |
If a query is executed repeatedly and hence its SQL is cached for faster | |
execution then if any of the contextual parameters change across query | |
execution then the user must supply this hint to ignore the cached | |
SQL query for the current execution. | |
This is in contrast with invalidation hint that removes the cached | |
version from cache altogether. | |
The cached SQL is retained and subsequent execution of the same query | |
string without this hint will reuse the cached SQL. | |
<P> | |
<DL> | |
<DT><B>See Also:</B><DD><A HREF="../../../../org/apache/openjpa/kernel/QueryHints.html#HINT_INVALIDATE_PREPARED_QUERY"><CODE>HINT_INVALIDATE_PREPARED_QUERY</CODE></A>, | |
<A HREF="../../../../constant-values.html#org.apache.openjpa.kernel.QueryHints.HINT_IGNORE_PREPARED_QUERY">Constant Field Values</A></DL> | |
</DL> | |
<HR> | |
<A NAME="HINT_IGNORE_FINDER"><!-- --></A><H3> | |
HINT_IGNORE_FINDER</H3> | |
<PRE> | |
static final <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>HINT_IGNORE_FINDER</B></PRE> | |
<DL> | |
<DD>A directive to ignore any cached finder query for find() operation. | |
The cached entry, if any, remains in the cache. | |
<P> | |
<DL> | |
<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.openjpa.kernel.QueryHints.HINT_IGNORE_FINDER">Constant Field Values</A></DL> | |
</DL> | |
<HR> | |
<A NAME="HINT_INVALIDATE_FINDER"><!-- --></A><H3> | |
HINT_INVALIDATE_FINDER</H3> | |
<PRE> | |
static final <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>HINT_INVALIDATE_FINDER</B></PRE> | |
<DL> | |
<DD>A directive to invalidate any cached finder query. | |
<P> | |
<DL> | |
<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.openjpa.kernel.QueryHints.HINT_INVALIDATE_FINDER">Constant Field Values</A></DL> | |
</DL> | |
<HR> | |
<A NAME="HINT_RECACHE_FINDER"><!-- --></A><H3> | |
HINT_RECACHE_FINDER</H3> | |
<PRE> | |
static final <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>HINT_RECACHE_FINDER</B></PRE> | |
<DL> | |
<DD>A directive to overwrite a cached finder query by a new query. | |
<P> | |
<DL> | |
<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.openjpa.kernel.QueryHints.HINT_RECACHE_FINDER">Constant Field Values</A></DL> | |
</DL> | |
<HR> | |
<A NAME="HINT_RELAX_BIND_PARAM_TYPE_CHECK"><!-- --></A><H3> | |
HINT_RELAX_BIND_PARAM_TYPE_CHECK</H3> | |
<PRE> | |
static final <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>HINT_RELAX_BIND_PARAM_TYPE_CHECK</B></PRE> | |
<DL> | |
<DD>A boolean directive to relax checking of binding parameter value and the predicate | |
it binds to. | |
<P> | |
<DL> | |
<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.openjpa.kernel.QueryHints.HINT_RELAX_BIND_PARAM_TYPE_CHECK">Constant Field Values</A></DL> | |
</DL> | |
<HR> | |
<A NAME="HINT_USE_LITERAL_IN_SQL"><!-- --></A><H3> | |
HINT_USE_LITERAL_IN_SQL</H3> | |
<PRE> | |
static final <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>HINT_USE_LITERAL_IN_SQL</B></PRE> | |
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<DD>A boolean directive to generate literal directly into the SQL statement instead of using position parameter, | |
if possible. | |
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<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.openjpa.kernel.QueryHints.HINT_USE_LITERAL_IN_SQL">Constant Field Values</A></DL> | |
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