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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.parser;
import java.util.HashMap;
import org.antlr.v4.runtime.ParserRuleContext;
import org.apache.sysml.api.DMLScript;
import org.apache.sysml.debug.DMLBreakpointManager;
import org.apache.sysml.parser.Expression.DataOp;
public class OutputStatement extends Statement
{
private DataIdentifier _id;
private DataExpression _paramsExpr;
public static final String[] WRITE_VALID_PARAM_NAMES = { DataExpression.IO_FILENAME,
DataExpression.FORMAT_TYPE,
DataExpression.DELIM_DELIMITER,
DataExpression.DELIM_HAS_HEADER_ROW,
DataExpression.DELIM_SPARSE,
DataExpression.DESCRIPTIONPARAM};
public DataIdentifier getIdentifier(){
return _id;
}
public DataExpression getSource(){
return _paramsExpr;
}
public void setIdentifier(DataIdentifier t) {
_id = t;
}
public OutputStatement(ParserRuleContext ctx, DataIdentifier t, DataOp op, String filename) {
_id = t;
_paramsExpr = new DataExpression(ctx, op, new HashMap(), filename);
}
public OutputStatement(DataIdentifier t, DataOp op, ParseInfo parseInfo) {
_id = t;
_paramsExpr = new DataExpression(op, new HashMap(), parseInfo);
}
public static boolean isValidParamName(String key){
for (String paramName : WRITE_VALID_PARAM_NAMES)
if (paramName.equals(key))
return true;
return false;
}
public void addExprParam(String name, Expression value, boolean fromMTDFile)
throws LanguageException
{
if( _paramsExpr.getVarParam(name) != null )
raiseValidateError("attempted to add IOStatement parameter " + name + " more than once", false);
if( !OutputStatement.isValidParamName(name) )
raiseValidateError("attempted to add invalid write statement parameter: " + name, false);
_paramsExpr.addVarParam(name, value);
}
// rewrites statement to support function inlining (create deep copy)
public Statement rewriteStatement(String prefix) throws LanguageException{
OutputStatement newStatement = new OutputStatement(null, Expression.DataOp.WRITE, this);
// rewrite outputStatement variable name (creates deep copy)
newStatement._id = (DataIdentifier)this._id.rewriteExpression(prefix);
// rewrite parameter expressions (creates deep copy)
DataOp op = _paramsExpr.getOpCode();
HashMap newExprParams = new HashMap();
for (String key : _paramsExpr.getVarParams().keySet()){
Expression newExpr = _paramsExpr.getVarParam(key).rewriteExpression(prefix);
newExprParams.put(key, newExpr);
}
DataExpression newParamerizedExpr = new DataExpression(op, newExprParams, this);
newStatement.setExprParams(newParamerizedExpr);
return newStatement;
}
public void setExprParams(DataExpression newParamerizedExpr) {
_paramsExpr = newParamerizedExpr;
}
public Expression getExprParam(String key){
return _paramsExpr.getVarParam(key);
}
public void initializeforwardLV(VariableSet activeIn){}
public VariableSet initializebackwardLV(VariableSet lo){
return lo;
}
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append(Statement.OUTPUTSTATEMENT + "(");
sb.append("id=" + _id.toString());
for (String key : _paramsExpr.getVarParams().keySet()) {
sb.append(", ");
sb.append(key);
sb.append("=");
Expression exp = _paramsExpr.getVarParam(key);
if (exp instanceof StringIdentifier) {
sb.append("\"");
sb.append(exp.toString());
sb.append("\"");
} else {
sb.append(exp.toString());
}
}
sb.append(");");
return sb.toString();
}
@Override
public VariableSet variablesRead() {
VariableSet result = new VariableSet();
// handle variable that is being written out
result.addVariables(_id.variablesRead());
// handle variables for output filename expression
//result.addVariables(_filenameExpr.variablesRead());
// add variables for parameter expressions
for (String key : _paramsExpr.getVarParams().keySet())
result.addVariables(_paramsExpr.getVarParam(key).variablesRead()) ;
return result;
}
@Override
public VariableSet variablesUpdated() {
return null;
}
@Override
public boolean controlStatement() {
// ensure that breakpoints end up in own statement block
if (DMLScript.ENABLE_DEBUG_MODE) {
DMLBreakpointManager.insertBreakpoint(_paramsExpr.getBeginLine());
return true;
}
Expression fmt = _paramsExpr.getVarParam(DataExpression.FORMAT_TYPE);
if ( fmt != null && fmt.toString().equalsIgnoreCase("csv")) {
return true;
}
return false;
}
}