Revision: 15963
http://gate.svn.sourceforge.net/gate/?rev=15963&view=rev
Author: valyt
Date: 2012-07-20 11:22:42 +0000 (Fri, 20 Jul 2012)
Log Message:
-----------
Throw an exception explaining that a direct index was required but not found
(rather then a NPE later on).
Modified Paths:
--------------
mimir/trunk/mimir-core/src/gate/mimir/search/terms/AbstractIndexTermsQuery.java
Modified:
mimir/trunk/mimir-core/src/gate/mimir/search/terms/AbstractIndexTermsQuery.java
===================================================================
---
mimir/trunk/mimir-core/src/gate/mimir/search/terms/AbstractIndexTermsQuery.java
2012-07-20 01:19:36 UTC (rev 15962)
+++
mimir/trunk/mimir-core/src/gate/mimir/search/terms/AbstractIndexTermsQuery.java
2012-07-20 11:22:42 UTC (rev 15963)
@@ -28,7 +28,7 @@
import java.io.IOException;
/**
- * Base class for terms queries that use an MG4J index for their search.
+ * Base class for terms queries that use an MG4J direct index for their search.
*/
public abstract class AbstractIndexTermsQuery extends AbstractTermsQuery {
@@ -69,7 +69,16 @@
this.indexType = indexType;
}
-
+ /**
+ * Populates the internal state by obtaining references to the direct and
+ * indirect indexes from the {@link QueryEngine}.
+ *
+ * @param engine the {@link QueryEngine} used to execute this query.
+ *
+ * @throws IllegalArgumentException if the index represented by the provided
+ * query engine does not have a direct index for the given sub-index (as
+ * specified by {@link #indexType} and {@link #indexName}).
+ */
protected void prepare(QueryEngine engine) {
this.engine = engine;
switch(indexType){
@@ -85,6 +94,12 @@
throw new IllegalArgumentException("Invalid index type: " +
indexType.toString());
}
+ if(directIndexPool == null) {
+ throw new IllegalArgumentException("This type of query requires a " +
+ "direct index, but one was not found for (" +
+ indexType.toString().toLowerCase() + ") sub-index \"" +
+ indexName + "\"");
+ }
}
protected TermsResultSet buildResultSet(DocumentIterator documentIterator)
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