diff options
| author | Brian S. O'Neill <bronee@gmail.com> | 2006-08-30 01:52:10 +0000 |
|---|---|---|
| committer | Brian S. O'Neill <bronee@gmail.com> | 2006-08-30 01:52:10 +0000 |
| commit | edcd84a1cb3c2009b0596939f30cee35028afcfc (patch) | |
| tree | bac64b7d8e96af10fd041a5b8d0759f74f59e14e /src/main/java/com/amazon/carbonado/info/Direction.java | |
| parent | 8365fcc3a5b2285fc1fe442d6f2eb8a90cbbab3a (diff) | |
Add introspection support
Diffstat (limited to 'src/main/java/com/amazon/carbonado/info/Direction.java')
| -rw-r--r-- | src/main/java/com/amazon/carbonado/info/Direction.java | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/src/main/java/com/amazon/carbonado/info/Direction.java b/src/main/java/com/amazon/carbonado/info/Direction.java new file mode 100644 index 0000000..67d003a --- /dev/null +++ b/src/main/java/com/amazon/carbonado/info/Direction.java @@ -0,0 +1,67 @@ +/*
+ * Copyright 2006 Amazon Technologies, Inc. or its affiliates.
+ * Amazon, Amazon.com and Carbonado are trademarks or registered trademarks
+ * of Amazon Technologies, Inc. or its affiliates. All rights reserved.
+ *
+ * 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.amazon.carbonado.info;
+
+/**
+ * Describes a property sorting direction.
+ *
+ * @author Brian S O'Neill
+ */
+public enum Direction {
+ ASCENDING('+'), DESCENDING('-'), UNSPECIFIED('~');
+
+ private char mCharValue;
+
+ private Direction(char charValue) {
+ mCharValue = charValue;
+ }
+
+ /**
+ * Returns the reverse direction of this.
+ */
+ public Direction reverse() {
+ if (this == ASCENDING) {
+ return DESCENDING;
+ } else if (this == DESCENDING) {
+ return ASCENDING;
+ }
+ return this;
+ }
+
+ /**
+ * Returns '+' for ASCENDING, '-' for DESCENDING, and '~' for UNSPECIFIED.
+ */
+ public char toCharacter() {
+ return mCharValue;
+ }
+
+ /**
+ * Returns ASCENDING for '+', DESCENDING for '-', UNSPECIFIED for anything
+ * else.
+ */
+ public static Direction fromCharacter(char c) {
+ if (c == '+') {
+ return ASCENDING;
+ }
+ if (c == '-') {
+ return DESCENDING;
+ }
+ return UNSPECIFIED;
+ }
+}
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