diff options
Diffstat (limited to 'java/com/google/gerrit/server/query/change/RegexTopicPredicate.java')
-rw-r--r-- | java/com/google/gerrit/server/query/change/RegexTopicPredicate.java | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/java/com/google/gerrit/server/query/change/RegexTopicPredicate.java b/java/com/google/gerrit/server/query/change/RegexTopicPredicate.java new file mode 100644 index 0000000000..2b58c88dbc --- /dev/null +++ b/java/com/google/gerrit/server/query/change/RegexTopicPredicate.java @@ -0,0 +1,54 @@ +// Copyright (C) 2010 The Android Open Source Project +// +// 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 at +// +// 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 com.google.gerrit.server.query.change; + +import static com.google.gerrit.server.index.change.ChangeField.EXACT_TOPIC; + +import com.google.gerrit.reviewdb.client.Change; +import com.google.gwtorm.server.OrmException; +import dk.brics.automaton.RegExp; +import dk.brics.automaton.RunAutomaton; + +public class RegexTopicPredicate extends ChangeRegexPredicate { + protected final RunAutomaton pattern; + + public RegexTopicPredicate(String re) { + super(EXACT_TOPIC, re); + + if (re.startsWith("^")) { + re = re.substring(1); + } + + if (re.endsWith("$") && !re.endsWith("\\$")) { + re = re.substring(0, re.length() - 1); + } + + this.pattern = new RunAutomaton(new RegExp(re).toAutomaton()); + } + + @Override + public boolean match(ChangeData object) throws OrmException { + Change change = object.change(); + if (change == null || change.getTopic() == null) { + return false; + } + return pattern.run(change.getTopic()); + } + + @Override + public int getCost() { + return 1; + } +} |