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Declarative Machine Learning
/*
* 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.sysml.udf.lib;
import org.apache.sysml.conf.ConfigurationManager;
import org.apache.sysml.runtime.matrix.data.InputInfo;
import org.apache.sysml.runtime.matrix.data.MatrixBlock;
import org.apache.sysml.runtime.matrix.data.OutputInfo;
import org.apache.sysml.runtime.util.DataConverter;
import org.apache.sysml.udf.FunctionParameter;
import org.apache.sysml.udf.Matrix;
import org.apache.sysml.udf.PackageFunction;
import org.apache.sysml.udf.Scalar;
import org.apache.sysml.udf.Matrix.ValueType;
import org.apache.sysml.udf.Scalar.ScalarValueType;
public class DynamicReadMatrixRcCP extends PackageFunction
{
private static final long serialVersionUID = 1L;
private Matrix _ret;
private Scalar _rc;
@Override
public int getNumFunctionOutputs()
{
return 2;
}
@Override
public FunctionParameter getFunctionOutput(int pos)
{
if(pos == 0)
return _ret;
if(pos == 1)
return _rc;
throw new RuntimeException("Invalid function output being requested");
}
@Override
public void execute()
{
try
{
String fname = ((Scalar) this.getFunctionInput(0)).getValue();
Integer m = Integer.parseInt(((Scalar) this.getFunctionInput(1)).getValue());
Integer n = Integer.parseInt(((Scalar) this.getFunctionInput(2)).getValue());
String format = ((Scalar) this.getFunctionInput(3)).getValue();
InputInfo ii = InputInfo.stringToInputInfo(format);
OutputInfo oi = OutputInfo.BinaryBlockOutputInfo;
String fnameTmp = createOutputFilePathAndName("TMP");
_ret = new Matrix(fnameTmp, m, n, ValueType.Double);
MatrixBlock mbTmp = DataConverter.readMatrixFromHDFS(fname, ii, m, n, ConfigurationManager.getBlocksize(), ConfigurationManager.getBlocksize());
_ret.setMatrixDoubleArray(mbTmp, oi, ii);
_rc = new Scalar(ScalarValueType.Integer, "0");
//NOTE: The packagesupport wrapper creates a new MatrixObjectNew with the given
// matrix block. This leads to a dirty state of the new object. Hence, the resulting
// intermediate plan variable will be exported in front of MR jobs and during this export
// the format will be changed to binary block (the contract of external functions),
// no matter in which format the original matrix was.
}
catch(Exception e)
{
_rc = new Scalar(ScalarValueType.Integer, "1");
// throw new PackageRuntimeException("Error executing dynamic read of matrix",e);
}
}
}