evaluator.html

基于mondrian 开源框架进行OLAP多维分析

<A NAME="getConnectionLocale()"><!-- --></A><H3>
getConnectionLocale</H3>
<PRE>
<A HREF="http://java.sun.com/javase/6/docs/api/java/util/Locale.html" title="class or interface in java.util">Locale</A> <B>getConnectionLocale</B>()</PRE>
<DL>
<DD>Returns the connection's locale.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getProperty(java.lang.String, java.lang.Object)"><!-- --></A><H3>
getProperty</H3>
<PRE>
<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> <B>getProperty</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;name,
                   <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;defaultValue)</PRE>
<DL>
<DD>Retrieves the value of property <code>name</code>. If more than one
 member in the current context defines that property, the one with the
 highest solve order has precedence.

 <p>If the property is not defined, default value is returned.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getSchemaReader()"><!-- --></A><H3>
getSchemaReader</H3>
<PRE>
<A HREF="../../mondrian/olap/SchemaReader.html" title="interface in mondrian.olap">SchemaReader</A> <B>getSchemaReader</B>()</PRE>
<DL>
<DD>Returns a <A HREF="../../mondrian/olap/SchemaReader.html" title="interface in mondrian.olap"><CODE>SchemaReader</CODE></A> appropriate for the current
 access-control context.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getCachedResult(mondrian.olap.ExpCacheDescriptor)"><!-- --></A><H3>
getCachedResult</H3>
<PRE>
<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> <B>getCachedResult</B>(<A HREF="../../mondrian/olap/ExpCacheDescriptor.html" title="class in mondrian.olap">ExpCacheDescriptor</A>&nbsp;key)</PRE>
<DL>
<DD>Simple caching of the result of an <code>Exp</code>. The
 key for the cache consists of all members of the current
 context that <code>exp</code> depends on. Members of
 independent dimensions are not part of the key.
<P>
<DD><DL>
<DT><B>See Also:</B><DD><A HREF="../../mondrian/calc/Calc.html#dependsOn(mondrian.olap.Dimension)"><CODE>Calc.dependsOn(mondrian.olap.Dimension)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="isNonEmpty()"><!-- --></A><H3>
isNonEmpty</H3>
<PRE>
boolean <B>isNonEmpty</B>()</PRE>
<DL>
<DD>Returns true for an axis that is NON EMPTY.

 <p>May be used by expression
 evaluators to optimize their result. For example, a top-level crossjoin
 may be optimized by removing all non-empty set elements before
 performing the crossjoin. This is possible because of the identity

 <blockquote><code>nonempty(crossjoin(a, b)) ==
 nonempty(crossjoin(nonempty(a), nonempty(b));</code></blockquote>
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="setNonEmpty(boolean)"><!-- --></A><H3>
setNonEmpty</H3>
<PRE>
void <B>setNonEmpty</B>(boolean&nbsp;nonEmpty)</PRE>
<DL>
<DD>Sets whether an expression evaluation should filter out empty cells.
 Allows expressions to modify non empty flag to evaluate their children.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="newEvalException(java.lang.Object, java.lang.String)"><!-- --></A><H3>
newEvalException</H3>
<PRE>
<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/RuntimeException.html" title="class or interface in java.lang">RuntimeException</A> <B>newEvalException</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;context,
                                  <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;s)</PRE>
<DL>
<DD>Creates an exception which indicates that an error has occurred during
 the runtime evaluation of a function. The caller should then throw that
 exception.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="evaluateNamedSet(java.lang.String, mondrian.olap.Exp)"><!-- --></A><H3>
evaluateNamedSet</H3>
<PRE>
<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> <B>evaluateNamedSet</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;name,
                        <A HREF="../../mondrian/olap/Exp.html" title="interface in mondrian.olap">Exp</A>&nbsp;exp)</PRE>
<DL>
<DD>Evaluates a named set.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getMembers()"><!-- --></A><H3>
getMembers</H3>
<PRE>
<A HREF="../../mondrian/olap/Member.html" title="interface in mondrian.olap">Member</A>[] <B>getMembers</B>()</PRE>
<DL>
<DD>Returns an array of the members which make up the current context.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getMissCount()"><!-- --></A><H3>
getMissCount</H3>
<PRE>
int <B>getMissCount</B>()</PRE>
<DL>
<DD>Returns the number of times that this evaluator has told a lie when
 retrieving cell values.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getParameterValue(mondrian.calc.ParameterSlot)"><!-- --></A><H3>
getParameterValue</H3>
<PRE>
<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> <B>getParameterValue</B>(<A HREF="../../mondrian/calc/ParameterSlot.html" title="interface in mondrian.calc">ParameterSlot</A>&nbsp;slot)</PRE>
<DL>
<DD>Returns the value of a parameter, evaluating its default value if it is
 not set.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getIterationLength()"><!-- --></A><H3>
getIterationLength</H3>
<PRE>
int <B>getIterationLength</B>()</PRE>
<DL>
<DD><DL>

<DT><B>Returns:</B><DD>the iteration length of the current context</DL>
</DD>
</DL>
<HR>

<A NAME="setIterationLength(int)"><!-- --></A><H3>
setIterationLength</H3>
<PRE>
void <B>setIterationLength</B>(int&nbsp;length)</PRE>
<DL>
<DD>Sets the iteration length for the current evaluator context
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>length</CODE> - length to be set</DL>
</DD>
</DL>
<HR>

<A NAME="isEvalAxes()"><!-- --></A><H3>
isEvalAxes</H3>
<PRE>
boolean <B>isEvalAxes</B>()</PRE>
<DL>
<DD><DL>

<DT><B>Returns:</B><DD>true if evaluating axes</DL>
</DD>
</DL>
<HR>

<A NAME="setEvalAxes(boolean)"><!-- --></A><H3>
setEvalAxes</H3>
<PRE>
void <B>setEvalAxes</B>(boolean&nbsp;evalAxes)</PRE>
<DL>
<DD>Indicate whether the evaluator is evaluating the axes
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>evalAxes</CODE> - true if evaluating axes</DL>
</DD>
</DL>
<HR>

<A NAME="pushAggregation(java.util.List)"><!-- --></A><H3>
pushAggregation</H3>
<PRE>
<A HREF="../../mondrian/olap/Evaluator.html" title="interface in mondrian.olap">Evaluator</A> <B>pushAggregation</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html" title="class or interface in java.util">List</A>&lt;<A HREF="../../mondrian/olap/Member.html" title="interface in mondrian.olap">Member</A>&gt;&nbsp;list)</PRE>
<DL>
<DD>Returns a new Aggregator whose aggregation context adds a given list of
 members or tuples, and whose dimensional context is the same as this
 Aggregator.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>list</CODE> - List of members
<DT><B>Returns:</B><DD>Aggregator with <code>list</code> added to its aggregation
   context</DL>
</DD>
</DL>
<HR>

<A NAME="shouldIgnoreUnrelatedDimensions()"><!-- --></A><H3>
shouldIgnoreUnrelatedDimensions</H3>
<PRE>
boolean <B>shouldIgnoreUnrelatedDimensions</B>()</PRE>
<DL>
<DD>Checks if unrelated dimensions to the measure in the current context
 should be ignored
<P>
<DD><DL>

<DT><B>Returns:</B><DD>boolean</DL>
</DD>
</DL>
<HR>

<A NAME="getMeasureCube()"><!-- --></A><H3>
getMeasureCube</H3>
<PRE>
<A HREF="../../mondrian/olap/Cube.html" title="interface in mondrian.olap">Cube</A> <B>getMeasureCube</B>()</PRE>
<DL>
<DD>Returns the base (non-virtual) cube that the current measure in the
 context belongs to.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>Cube</DL>
</DD>
</DL>
<HR>

<A NAME="needToReturnNullForUnrelatedDimension(mondrian.olap.Member[])"><!-- --></A><H3>
needToReturnNullForUnrelatedDimension</H3>
<PRE>
boolean <B>needToReturnNullForUnrelatedDimension</B>(<A HREF="../../mondrian/olap/Member.html" title="interface in mondrian.olap">Member</A>[]&nbsp;members)</PRE>
<DL>
<DD>If IgnoreMeasureForNonJoiningDimension is set to true and one or more
 members are on unrelated dimension for the measure in current context
 then returns true.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>members</CODE> - dimensions for the members need to be checked whether
 related or unrelated
<DT><B>Returns:</B><DD>boolean</DL>
</DD>
</DL>
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