| /* |
| * 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.index.sasi.utils; |
| |
| import java.nio.ByteBuffer; |
| |
| import org.apache.cassandra.db.marshal.*; |
| import org.apache.cassandra.serializers.MarshalException; |
| |
| public class TypeUtil |
| { |
| public static boolean isValid(ByteBuffer term, AbstractType<?> validator) |
| { |
| try |
| { |
| validator.validate(term); |
| return true; |
| } |
| catch (MarshalException e) |
| { |
| return false; |
| } |
| } |
| |
| public static ByteBuffer tryUpcast(ByteBuffer term, AbstractType<?> validator) |
| { |
| if (term.remaining() == 0) |
| return null; |
| |
| try |
| { |
| if (validator instanceof Int32Type && term.remaining() == 2) |
| { |
| return Int32Type.instance.decompose((int) term.getShort(term.position())); |
| } |
| else if (validator instanceof LongType) |
| { |
| long upcastToken; |
| |
| switch (term.remaining()) |
| { |
| case 2: |
| upcastToken = (long) term.getShort(term.position()); |
| break; |
| |
| case 4: |
| upcastToken = (long) Int32Type.instance.compose(term); |
| break; |
| |
| default: |
| upcastToken = Long.parseLong(UTF8Type.instance.getString(term)); |
| } |
| |
| return LongType.instance.decompose(upcastToken); |
| } |
| else if (validator instanceof DoubleType && term.remaining() == 4) |
| { |
| return DoubleType.instance.decompose((double) FloatType.instance.compose(term)); |
| } |
| |
| // maybe it was a string after all |
| return validator.fromString(UTF8Type.instance.getString(term)); |
| } |
| catch (Exception e) |
| { |
| return null; |
| } |
| } |
| } |