Revision: 13718
http://gate.svn.sourceforge.net/gate/?rev=13718&view=rev
Author: valyt
Date: 2011-04-20 15:31:24 +0000 (Wed, 20 Apr 2011)
Log Message:
-----------
Added support for query prefix and suffix (which can be used to supply e.g.
PREFIX statements inside the Index template).
Modified Paths:
--------------
mimir/trunk/plugins/sparql/src/gate/mimir/sparql/SPARQLSemanticAnnotationHelper.java
Modified:
mimir/trunk/plugins/sparql/src/gate/mimir/sparql/SPARQLSemanticAnnotationHelper.java
===================================================================
---
mimir/trunk/plugins/sparql/src/gate/mimir/sparql/SPARQLSemanticAnnotationHelper.java
2011-04-20 15:06:12 UTC (rev 13717)
+++
mimir/trunk/plugins/sparql/src/gate/mimir/sparql/SPARQLSemanticAnnotationHelper.java
2011-04-20 15:31:24 UTC (rev 13718)
@@ -55,7 +55,24 @@
private static final Logger logger = Logger
.getLogger(SPARQLSemanticAnnotationHelper.class);
+
/**
+ * A query fragment that, if set, gets prepended to all SPARQL queries sent
+ * to the end point. This could be used, for example, for setting up a list
of
+ * prefixes.
+ */
+ private String queryPrefix;
+
+
+ /**
+ * A query fragment that, if set, gets appended to all SPARQL queries sent
+ * to the end point. This could be used, for example, for setting up a
+ * LIMIT constraint.
+ */
+ private String querySuffix;
+
+
+ /**
* The name used for the synthetic feature used at query time to supply the
* SPARQL query.
*/
@@ -66,6 +83,41 @@
*/
private String sparqlEndpoint;
+
+ /**
+ * See {@link #setQueryPrefix(String)}
+ * @return
+ */
+ public String getQueryPrefix() {
+ return queryPrefix;
+ }
+
+ /**
+ * Sets the query prefix: a query fragment that, if set, gets prepended to
+ * all SPARQL queries sent to the end point. This could be used, for example,
+ * for setting up a list of PREFIXes.
+ */
+ public void setQueryPrefix(String queryPrefix) {
+ this.queryPrefix = queryPrefix;
+ }
+
+ /**
+ * See {@link #setQuerySuffix(String)}.
+ * @return
+ */
+ public String getQuerySuffix() {
+ return querySuffix;
+ }
+
+ /**
+ * Sets the query suffix: a query fragment that, if set, gets appended to
+ * all SPARQL queries sent to the end point. This could be used, for example,
+ * for setting up a LIMIT constraint.
+ */
+ public void setQuerySuffix(String querySuffix) {
+ this.querySuffix = querySuffix;
+ }
+
public SPARQLSemanticAnnotationHelper(String annotationType,
String sparqlEndpoint, String[] nominalFeatureNames,
String[] integerFeatureNames, String[] floatFeatureNames,
@@ -90,7 +142,9 @@
String query = null;
for(Constraint aConstraint : constraints) {
if(aConstraint.getFeatureName() == SPARQL_QUERY_FEATURE_NAME) {
- query = (String)aConstraint.getValue();
+ query = (queryPrefix != null ? queryPrefix : "") +
+ (String)aConstraint.getValue() +
+ (querySuffix != null ? querySuffix : "");
} else {
passThroughConstraints.add(aConstraint);
}
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