Revision: 17276
http://sourceforge.net/p/gate/code/17276
Author: valyt
Date: 2014-02-06 17:30:21 +0000 (Thu, 06 Feb 2014)
Log Message:
-----------
New type of mention describer that uses a user-specified pattern to generate
mention descriptions from the mention's set of features.
Added Paths:
-----------
mimir/trunk/mimir-core/src/gate/mimir/util/PatternMentionDescriber.java
Added: mimir/trunk/mimir-core/src/gate/mimir/util/PatternMentionDescriber.java
===================================================================
--- mimir/trunk/mimir-core/src/gate/mimir/util/PatternMentionDescriber.java
(rev 0)
+++ mimir/trunk/mimir-core/src/gate/mimir/util/PatternMentionDescriber.java
2014-02-06 17:30:21 UTC (rev 17276)
@@ -0,0 +1,113 @@
+/*
+ * PatternMentionDescriber.java
+ *
+ * Copyright (c) 2007-2011, The University of Sheffield.
+ *
+ * This file is part of GATE MÃmir (see http://gate.ac.uk/family/mimir.html),
+ * and is free software, licenced under the GNU Lesser General Public License,
+ * Version 3, June 2007 (also included with this distribution as file
+ * LICENCE-LGPL3.html).
+ *
+ * Valentin Tablan, 06 Feb 2014
+ *
+ * $Id$
+ */
+package gate.mimir.util;
+
+import java.util.HashSet;
+import java.util.Set;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import gate.mimir.AbstractSemanticAnnotationHelper;
+import gate.mimir.AbstractSemanticAnnotationHelper.MentionDescriber;
+
+
+/**
+ * A {@link MentionDescriber} that uses a user-given pattern to describe
+ * annotation mentions.
+ */
+public class PatternMentionDescriber implements MentionDescriber{
+
+ private static final long serialVersionUID = -3310472212294302781L;
+
+ /**
+ * Regex used to find feature names in the pattern.
+ */
+ protected static final Pattern FEATURE_FINDER =
Pattern.compile("\\$\\{(.+?)\\}");
+
+ /**
+ * The pattern used to generate mention descriptions.
+ */
+ protected String pattern;
+
+ /**
+ * The set of feature names that actually occur in the pattern.
+ */
+ protected Set<String> featureNames;
+
+
+ /**
+ * Construct a new pattern-based mention describer. When using this
+ * constructor make sure to alter set the pattern by calling
+ * {@link #setPattern(String)}.
+ */
+ public PatternMentionDescriber() {
+ featureNames = new HashSet<String>();
+ }
+
+
+ /**
+ * Construct a new pattern-based mention describer.
+ *
+ * @param pattern the pattern used to generate mentions. To describe an
+ * annotation mention, all occurrences of "${name}" in the pattern
+ * are replaced with the values of the <code>name</code> feature for the
given
+ * annotation.
+ */
+ public PatternMentionDescriber(String pattern) {
+ this();
+ setPattern(pattern);
+ }
+
+
+ public String getPattern() {
+ return pattern;
+ }
+
+ /**
+ * Sets the pattern to be used when describing annotation mentions.
+ *
+ * @param pattern the pattern used to generate mentions. To describe an
+ * annotation mention, all occurrences of "${name}" in the pattern
+ * are replaced with the values of the <code>name</code> feature for the
given
+ * annotation. */
+ public void setPattern(String pattern) {
+ this.pattern = pattern;
+ int pos = 0;
+ Matcher m = FEATURE_FINDER.matcher(pattern);
+ while(m.find(pos)) {
+ featureNames.add(m.group(1));
+ pos = m.end();
+ }
+ }
+
+ @Override
+ public String describeMention(AbstractSemanticAnnotationHelper helper,
+ String mentionUri, String[] descriptiveFeatureNames,
+ String[] descriptiveFeatureValues) {
+ String res = pattern;
+ for(int i = 0; i < descriptiveFeatureNames.length; i++) {
+ if(featureNames.contains(descriptiveFeatureNames[i])) {
+ res = res.replace("${" + descriptiveFeatureNames[i] + "}",
+ (descriptiveFeatureValues[i] != null ?
+ descriptiveFeatureValues[i] : ""));
+ }
+ }
+ if(res.length() == 0) {
+ res = "{" + helper.getAnnotationType() + "}";
+ }
+ return res;
+ }
+
+}
Property changes on:
mimir/trunk/mimir-core/src/gate/mimir/util/PatternMentionDescriber.java
___________________________________________________________________
Added: svn:keywords
## -0,0 +1 ##
+Id
\ No newline at end of property
Added: svn:eol-style
## -0,0 +1 ##
+native
\ No newline at end of property
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