/**
* 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.drill.exec.expr.fn.impl;
import io.netty.buffer.DrillBuf;
import io.netty.util.internal.PlatformDependent;
/**
* The base class of hash classes used in Drill.
*/
public class DrillHash {
public static final long getLongLittleEndian(long offset) {
//return PlatformDependent.getLong(offset);
return ((long) PlatformDependent.getByte(offset+7) << 56)
| ((PlatformDependent.getByte(offset+6) & 0xffL) << 48)
| ((PlatformDependent.getByte(offset+5) & 0xffL) << 40)
| ((PlatformDependent.getByte(offset+4) & 0xffL) << 32)
| ((PlatformDependent.getByte(offset+3) & 0xffL) << 24)
| ((PlatformDependent.getByte(offset+2) & 0xffL) << 16)
| ((PlatformDependent.getByte(offset+1) & 0xffL) << 8)
| ((PlatformDependent.getByte(offset) & 0xffL));
}
public static final long getIntLittleEndian(long offset) {
long retl = 0;
retl = ((PlatformDependent.getByte(offset+3) &0xffL) << 24)
| ((PlatformDependent.getByte(offset+2) & 0xffL) << 16)
| ((PlatformDependent.getByte(offset+1) & 0xffL) << 8)
| ((PlatformDependent.getByte(offset) & 0xffL));
return retl;
}
}