1 files changed, 86 insertions, 0 deletions
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/query/AndPredicate.java b/gerrit-server/src/main/java/com/google/gerrit/server/query/AndPredicate.java
new file mode 100644
index 0000000000..5e95c18c2b
--- /dev/null
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/query/AndPredicate.java
@@ -0,0 +1,86 @@
+// Copyright (C) 2009 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;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+
+/** Requires all predicates to be true. */
+public final class AndPredicate extends Predicate {
+  private final Predicate[] children;
+
+  public AndPredicate(final Predicate... that) {
+    this(Arrays.asList(that));
+  }
+
+  public AndPredicate(final Collection<Predicate> that) {
+    final ArrayList<Predicate> tmp = new ArrayList<Predicate>(that.size());
+    for (Predicate p : that) {
+      if (p instanceof AndPredicate) {
+        tmp.addAll(p.getChildren());
+      } else {
+        tmp.add(p);
+      }
+    }
+    if (tmp.size() < 2) {
+      throw new IllegalArgumentException("Need at least two predicates");
+    }
+    children = new Predicate[tmp.size()];
+    tmp.toArray(children);
+  }
+
+  @Override
+  public List<Predicate> getChildren() {
+    return Collections.unmodifiableList(Arrays.asList(children));
+  }
+
+  @Override
+  public int getChildCount() {
+    return children.length;
+  }
+
+  @Override
+  public Predicate getChild(final int i) {
+    return children[i];
+  }
+
+  @Override
+  public int hashCode() {
+    return children[0].hashCode() * 31 + children[1].hashCode();
+  }
+
+  @Override
+  public boolean equals(final Object other) {
+    return other instanceof AndPredicate
+        && getChildren().equals(((AndPredicate) other).getChildren());
+  }
+
+  @Override
+  public String toString() {
+    final StringBuilder r = new StringBuilder();
+    r.append("(");
+    for (int i = 0; i < children.length; i++) {
+      if (i != 0) {
+        r.append(" ");
+      }
+      r.append(children[i]);
+    }
+    r.append(")");
+    return r.toString();
+  }
+}