| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.cassandra.cql3; |
| |
| import java.util.Locale; |
| import java.nio.ByteBuffer; |
| |
| import org.apache.cassandra.db.marshal.UTF8Type; |
| import org.apache.cassandra.exceptions.SyntaxException; |
| import org.apache.cassandra.serializers.MarshalException; |
| |
| /** |
| * Identifies a field in a UDT. |
| */ |
| public class FieldIdentifier |
| { |
| public final ByteBuffer bytes; |
| |
| public FieldIdentifier(ByteBuffer bytes) |
| { |
| this.bytes = bytes; |
| } |
| |
| /** |
| * Creates a {@code FieldIdentifier} from an unquoted identifier string. |
| */ |
| public static FieldIdentifier forUnquoted(String text) |
| { |
| return new FieldIdentifier(convert(text.toLowerCase(Locale.US))); |
| } |
| |
| /** |
| * Creates a {@code FieldIdentifier} from a quoted identifier string. |
| */ |
| public static FieldIdentifier forQuoted(String text) |
| { |
| return new FieldIdentifier(convert(text)); |
| } |
| |
| /** |
| * Creates a {@code FieldIdentifier} from an internal string. |
| */ |
| public static FieldIdentifier forInternalString(String text) |
| { |
| // If we store a field internally, we consider it as quoted, i.e. we preserve |
| // whatever case the text has. |
| return forQuoted(text); |
| } |
| |
| private static ByteBuffer convert(String text) |
| { |
| try |
| { |
| return UTF8Type.instance.decompose(text); |
| } |
| catch (MarshalException e) |
| { |
| throw new SyntaxException(String.format("For field name %s: %s", text, e.getMessage())); |
| } |
| } |
| |
| @Override |
| public String toString() |
| { |
| return UTF8Type.instance.compose(bytes); |
| } |
| |
| @Override |
| public final int hashCode() |
| { |
| return bytes.hashCode(); |
| } |
| |
| @Override |
| public final boolean equals(Object o) |
| { |
| if(!(o instanceof FieldIdentifier)) |
| return false; |
| FieldIdentifier that = (FieldIdentifier)o; |
| return this.bytes.equals(that.bytes); |
| } |
| } |