| /* |
| * 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.asterix.runtime.evaluators.functions; |
| |
| import java.io.DataOutput; |
| import java.io.IOException; |
| |
| import org.apache.asterix.dataflow.data.nontagged.serde.ADoubleSerializerDeserializer; |
| import org.apache.asterix.dataflow.data.nontagged.serde.AFloatSerializerDeserializer; |
| import org.apache.asterix.dataflow.data.nontagged.serde.AInt16SerializerDeserializer; |
| import org.apache.asterix.dataflow.data.nontagged.serde.AInt32SerializerDeserializer; |
| import org.apache.asterix.dataflow.data.nontagged.serde.AInt64SerializerDeserializer; |
| import org.apache.asterix.dataflow.data.nontagged.serde.AInt8SerializerDeserializer; |
| import org.apache.asterix.formats.nontagged.SerializerDeserializerProvider; |
| import org.apache.asterix.om.base.AMutableDouble; |
| import org.apache.asterix.om.base.AMutableFloat; |
| import org.apache.asterix.om.base.AMutableInt16; |
| import org.apache.asterix.om.base.AMutableInt32; |
| import org.apache.asterix.om.base.AMutableInt64; |
| import org.apache.asterix.om.base.AMutableInt8; |
| import org.apache.asterix.om.base.IAObject; |
| import org.apache.asterix.om.exceptions.ExceptionUtil; |
| import org.apache.asterix.om.types.ATypeTag; |
| import org.apache.asterix.om.types.BuiltinType; |
| import org.apache.asterix.runtime.evaluators.common.ArgumentUtils; |
| import org.apache.hyracks.algebricks.core.algebra.functions.FunctionIdentifier; |
| import org.apache.hyracks.algebricks.runtime.base.IEvaluatorContext; |
| import org.apache.hyracks.algebricks.runtime.base.IScalarEvaluator; |
| import org.apache.hyracks.algebricks.runtime.base.IScalarEvaluatorFactory; |
| import org.apache.hyracks.api.dataflow.value.ISerializerDeserializer; |
| import org.apache.hyracks.api.exceptions.HyracksDataException; |
| import org.apache.hyracks.api.exceptions.SourceLocation; |
| import org.apache.hyracks.data.std.api.IPointable; |
| import org.apache.hyracks.data.std.primitive.VoidPointable; |
| import org.apache.hyracks.data.std.util.ArrayBackedValueStorage; |
| import org.apache.hyracks.dataflow.common.data.accessors.IFrameTupleReference; |
| |
| /** |
| * An abstract class for functions that take a numeric value as input and output a numeric value. |
| */ |
| abstract class AbstractUnaryNumericFunctionEval implements IScalarEvaluator { |
| |
| // For the argument. |
| protected final IPointable argPtr = new VoidPointable(); |
| |
| // For the result. |
| protected final AMutableDouble aDouble = new AMutableDouble(0); |
| protected final AMutableFloat aFloat = new AMutableFloat(0); |
| protected final AMutableInt64 aInt64 = new AMutableInt64(0); |
| protected final AMutableInt32 aInt32 = new AMutableInt32(0); |
| protected final AMutableInt16 aInt16 = new AMutableInt16((short) 0); |
| protected final AMutableInt8 aInt8 = new AMutableInt8((byte) 0); |
| private final ArrayBackedValueStorage resultStorage = new ArrayBackedValueStorage(); |
| private final DataOutput dataOutput = resultStorage.getDataOutput(); |
| |
| // The evaluator for the argument expression. |
| private final IScalarEvaluator argEval; |
| |
| @SuppressWarnings("rawtypes") |
| protected ISerializerDeserializer int8Serde = |
| SerializerDeserializerProvider.INSTANCE.getSerializerDeserializer(BuiltinType.AINT8); |
| @SuppressWarnings("rawtypes") |
| protected ISerializerDeserializer int16Serde = |
| SerializerDeserializerProvider.INSTANCE.getSerializerDeserializer(BuiltinType.AINT16); |
| @SuppressWarnings("rawtypes") |
| protected ISerializerDeserializer int32Serde = |
| SerializerDeserializerProvider.INSTANCE.getSerializerDeserializer(BuiltinType.AINT32); |
| @SuppressWarnings("rawtypes") |
| protected ISerializerDeserializer int64Serde = |
| SerializerDeserializerProvider.INSTANCE.getSerializerDeserializer(BuiltinType.AINT64); |
| @SuppressWarnings("rawtypes") |
| protected ISerializerDeserializer floatSerde = |
| SerializerDeserializerProvider.INSTANCE.getSerializerDeserializer(BuiltinType.AFLOAT); |
| @SuppressWarnings("rawtypes") |
| protected ISerializerDeserializer doubleSerde = |
| SerializerDeserializerProvider.INSTANCE.getSerializerDeserializer(BuiltinType.ADOUBLE); |
| |
| // The function identifier, used for error messages. |
| private final FunctionIdentifier funcID; |
| private final SourceLocation sourceLoc; |
| private final IEvaluatorContext ctx; |
| |
| AbstractUnaryNumericFunctionEval(IEvaluatorContext context, IScalarEvaluatorFactory argEvalFactory, |
| FunctionIdentifier funcID, SourceLocation sourceLoc) throws HyracksDataException { |
| this.argEval = argEvalFactory.createScalarEvaluator(context); |
| this.funcID = funcID; |
| this.sourceLoc = sourceLoc; |
| this.ctx = context; |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public void evaluate(IFrameTupleReference tuple, IPointable result) throws HyracksDataException { |
| resultStorage.reset(); |
| argEval.evaluate(tuple, argPtr); |
| |
| if (PointableHelper.checkAndSetMissingOrNull(result, argPtr)) { |
| return; |
| } |
| |
| byte[] data = argPtr.getByteArray(); |
| int offset = argPtr.getStartOffset(); |
| |
| if (data[offset] == ATypeTag.SERIALIZED_INT8_TYPE_TAG) { |
| byte val = AInt8SerializerDeserializer.getByte(data, offset + 1); |
| processInt8(val, result); |
| } else if (data[offset] == ATypeTag.SERIALIZED_INT16_TYPE_TAG) { |
| short val = AInt16SerializerDeserializer.getShort(data, offset + 1); |
| processInt16(val, result); |
| } else if (data[offset] == ATypeTag.SERIALIZED_INT32_TYPE_TAG) { |
| int val = AInt32SerializerDeserializer.getInt(data, offset + 1); |
| processInt32(val, result); |
| } else if (data[offset] == ATypeTag.SERIALIZED_INT64_TYPE_TAG) { |
| long val = AInt64SerializerDeserializer.getLong(data, offset + 1); |
| processInt64(val, result); |
| } else if (data[offset] == ATypeTag.SERIALIZED_FLOAT_TYPE_TAG) { |
| float val = AFloatSerializerDeserializer.getFloat(data, offset + 1); |
| processFloat(val, result); |
| } else if (data[offset] == ATypeTag.SERIALIZED_DOUBLE_TYPE_TAG) { |
| double val = ADoubleSerializerDeserializer.getDouble(data, offset + 1); |
| processDouble(val, result); |
| } else { |
| ExceptionUtil.warnTypeMismatch(ctx, sourceLoc, funcID, data[offset], 0, ArgumentUtils.NUMERIC_TYPES); |
| PointableHelper.setNull(result); |
| } |
| } |
| |
| /** |
| * Processes an int8 argument. |
| * |
| * @param arg |
| * , the value of the argument. |
| * @param resultPointable |
| * , |
| * the pointable that should be set to the result location. |
| */ |
| protected abstract void processInt8(byte arg, IPointable resultPointable) throws HyracksDataException; |
| |
| /** |
| * Processes an int16 argument. |
| * |
| * @param arg |
| * , the value of the argument. |
| * @param resultPointable |
| * , |
| * the pointable that should be set to the result location. |
| */ |
| protected abstract void processInt16(short arg, IPointable resultPointable) throws HyracksDataException; |
| |
| /** |
| * Processes an int32 argument. |
| * |
| * @param arg |
| * , the value of the argument. |
| * @param resultPointable |
| * , |
| * the pointable that should be set to the result location. |
| */ |
| protected abstract void processInt32(int arg, IPointable resultPointable) throws HyracksDataException; |
| |
| /** |
| * Processes an int64 argument. |
| * |
| * @param arg |
| * , the value of the argument. |
| * @param resultPointable |
| * , |
| * the pointable that should be set to the result location. |
| */ |
| protected abstract void processInt64(long arg, IPointable resultPointable) throws HyracksDataException; |
| |
| /** |
| * Processes a float argument. |
| * |
| * @param arg |
| * , the value of the argument. |
| * @param resultPointable |
| * , |
| * the pointable that should be set to the result location. |
| */ |
| protected abstract void processFloat(float arg, IPointable resultPointable) throws HyracksDataException; |
| |
| /** |
| * Processes a double argument. |
| * |
| * @param arg |
| * , the value of the argument. |
| * @param resultPointable |
| * , |
| * the pointable that should be set to the result location. |
| */ |
| protected abstract void processDouble(double arg, IPointable resultPointable) throws HyracksDataException; |
| |
| // Serializes result into the result storage. |
| @SuppressWarnings("unchecked") |
| protected void serialize(IAObject result, ISerializerDeserializer serde, IPointable resultPointable) |
| throws HyracksDataException { |
| try { |
| serde.serialize(result, dataOutput); |
| resultPointable.set(resultStorage); |
| } catch (IOException e) { |
| throw HyracksDataException.create(e); |
| } |
| } |
| } |