added a new search modifier for fuzzy contains queries
diff --git a/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/invertedindex/search/ConjunctiveEditDistanceSearchModifier.java b/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/invertedindex/search/ConjunctiveEditDistanceSearchModifier.java
new file mode 100644
index 0000000..2f21d27
--- /dev/null
+++ b/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/invertedindex/search/ConjunctiveEditDistanceSearchModifier.java
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package edu.uci.ics.hyracks.storage.am.lsm.invertedindex.search;
+
+public class ConjunctiveEditDistanceSearchModifier extends EditDistanceSearchModifier {
+
+ private int gramLength;
+ private int edThresh;
+
+ public ConjunctiveEditDistanceSearchModifier(int gramLength, int edThresh) {
+ super(gramLength, edThresh);
+ }
+
+ @Override
+ public String toString() {
+ return "Conjunctive Edit Distance Search Modifier, GramLen: " + gramLength + ", Threshold: " + edThresh;
+ }
+
+ @Override
+ public short getNumTokensLowerBound(short numQueryTokens) {
+ return -1;
+ }
+
+ @Override
+ public short getNumTokensUpperBound(short numQueryTokens) {
+ return -1;
+ }
+}
diff --git a/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/invertedindex/search/ConjunctiveEditDistanceSearchModifierFactory.java b/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/invertedindex/search/ConjunctiveEditDistanceSearchModifierFactory.java
new file mode 100644
index 0000000..aeec45e
--- /dev/null
+++ b/hyracks/hyracks-storage-am-lsm-invertedindex/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/invertedindex/search/ConjunctiveEditDistanceSearchModifierFactory.java
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package edu.uci.ics.hyracks.storage.am.lsm.invertedindex.search;
+
+import edu.uci.ics.hyracks.storage.am.lsm.invertedindex.api.IInvertedIndexSearchModifier;
+import edu.uci.ics.hyracks.storage.am.lsm.invertedindex.api.IInvertedIndexSearchModifierFactory;
+
+public class ConjunctiveEditDistanceSearchModifierFactory implements IInvertedIndexSearchModifierFactory {
+ private static final long serialVersionUID = 1L;
+
+ private final int gramLength;
+ private final int edThresh;
+
+ public ConjunctiveEditDistanceSearchModifierFactory(int gramLength, int edThresh) {
+ this.gramLength = gramLength;
+ this.edThresh = edThresh;
+ }
+
+ @Override
+ public IInvertedIndexSearchModifier createSearchModifier() {
+ return new ConjunctiveEditDistanceSearchModifier(gramLength, edThresh);
+ }
+}