/**
* Copyright (c) 2013, Institute of Information Systems (Sven Groppe and contributors of LUPOSDATE), University of Luebeck
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
* following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice, this list of conditions and the following
* disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other materials provided with the distribution.
* - Neither the name of the University of Luebeck nor the names of its contributors may be used to endorse or promote
* products derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package lupos.optimizations.logical.rules.generated;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import lupos.optimizations.logical.rules.generated.runtime.Rule;
import lupos.engine.operators.BasicOperator;
import lupos.engine.operators.OperatorIDTuple;
public class BoundVariableinOptionalRule extends Rule {
private lupos.engine.operators.singleinput.filter.Filter f = null;
private lupos.engine.operators.BasicOperator o2 = null;
private lupos.engine.operators.BasicOperator o1 = null;
private lupos.engine.operators.BasicOperator jump_filter_end = null;
private lupos.engine.operators.BasicOperator jump_filter_begin = null;
private lupos.engine.operators.multiinput.optional.Optional opt = null;
private boolean _checkPrivate0(BasicOperator _op) {
if(_op.getClass() != lupos.engine.operators.multiinput.optional.Optional.class) {
return false;
}
this.opt = (lupos.engine.operators.multiinput.optional.Optional) _op;
List<BasicOperator> _precedingOperators_1_0 = _op.getPrecedingOperators();
for(BasicOperator _precOp_1_0 : _precedingOperators_1_0) {
if(_precOp_1_0.getOperatorIDTuple(_op).getId() != 1) {
continue;
}
if(_precOp_1_0.getClass() != lupos.engine.operators.singleinput.filter.Filter.class) {
continue;
}
this.f = (lupos.engine.operators.singleinput.filter.Filter) _precOp_1_0;
List<BasicOperator> _precedingOperators_2_0 = _precOp_1_0.getPrecedingOperators();
if(_precedingOperators_2_0.size() != 1) {
continue;
}
for(BasicOperator _precOp_2_0 : _precedingOperators_2_0) {
if(_precOp_2_0.getSucceedingOperators().size() != 1) {
break;
}
// --- handle JumpOver - begin ---
this.jump_filter_end = (lupos.engine.operators.BasicOperator) _precOp_2_0;
BasicOperator _searchIndex_2_0 = _precOp_2_0;
boolean _continueFlag_2_0 = false;
while(_searchIndex_2_0 != null && (_searchIndex_2_0.getClass() == lupos.engine.operators.singleinput.filter.Filter.class)) {
if(_searchIndex_2_0.getClass() != lupos.engine.operators.singleinput.filter.Filter.class) {
_continueFlag_2_0 = true;
break;
}
if(_searchIndex_2_0.getSucceedingOperators().size() != 1 || _searchIndex_2_0.getPrecedingOperators().size() != 1) {
_continueFlag_2_0 = true;
break;
}
_searchIndex_2_0 = _searchIndex_2_0.getPrecedingOperators().get(0);
}
if(_continueFlag_2_0) {
continue;
}
this.jump_filter_begin = (lupos.engine.operators.BasicOperator) _searchIndex_2_0.getSucceedingOperators().get(0).getOperator();
// --- handle JumpOver - end ---
List<BasicOperator> _precedingOperators_3_0 = this.jump_filter_begin.getPrecedingOperators();
if(_searchIndex_2_0 != this.jump_filter_begin) {
if(_precedingOperators_3_0.size() != 1) {
continue;
}
}
for(BasicOperator _precOp_3_0 : _precedingOperators_3_0) {
if(_precOp_3_0.getSucceedingOperators().size() != 1) {
break;
}
if(!(_precOp_3_0 instanceof lupos.engine.operators.BasicOperator)) {
continue;
}
this.o1 = (lupos.engine.operators.BasicOperator) _precOp_3_0;
for(BasicOperator _precOp_1_1 : _precedingOperators_1_0) {
if(_precOp_1_1.getOperatorIDTuple(_op).getId() != 0) {
continue;
}
if(_precOp_1_1.getSucceedingOperators().size() != 1) {
break;
}
if(!(_precOp_1_1 instanceof lupos.engine.operators.BasicOperator)) {
continue;
}
this.o2 = (lupos.engine.operators.BasicOperator) _precOp_1_1;
return true;
}
}
}
}
return false;
}
public BoundVariableinOptionalRule() {
this.startOpClass = lupos.engine.operators.multiinput.optional.Optional.class;
this.ruleName = "Bound Variable in Optional";
}
protected boolean check(BasicOperator _op) {
boolean _result = this._checkPrivate0(_op);
if(_result) {
// additional check method code...
if(this.o1 instanceof lupos.engine.operators.multiinput.join.Join && this.o1.getPrecedingOperators().contains(this.o2)) {
return false;
}
lupos.engine.operators.singleinput.filter.Filter filterOutestFilter = this.f;
java.util.Collection<lupos.datastructures.items.Variable> variablesInnerUnion = this.o1.getIntersectionVariables();
java.util.Collection<lupos.datastructures.items.Variable> variablesOuterUnion = this.o2.getUnionVariables();
boolean checkFurther = true;
while(checkFurther) {
if(!variablesInnerUnion.containsAll(filterOutestFilter.getUsedVariables())) {
for(lupos.datastructures.items.Variable v : filterOutestFilter.getUsedVariables()) {
if(!variablesInnerUnion.contains(v) && variablesOuterUnion.contains(v)) {
return true;
}
}
}
BasicOperator nextOp = filterOutestFilter.getPrecedingOperators().get(0);
if(nextOp.equals(this.o1)) {
checkFurther = false;
}
else {
filterOutestFilter = (lupos.engine.operators.singleinput.filter.Filter) nextOp;
}
}
return false;
}
return _result;
}
protected void replace(HashMap<Class<?>, HashSet<BasicOperator>> _startNodes) {
// remove obsolete connections...
this.o2.removeSucceedingOperator(new OperatorIDTuple(this.opt, 0));
this.opt.removePrecedingOperator(this.o2);
this.o1.removeSucceedingOperator(this.jump_filter_begin);
this.jump_filter_begin.removePrecedingOperator(this.o1);
// add new operators...
lupos.engine.operators.multiinput.join.Join j = null;
j = new lupos.engine.operators.multiinput.join.Join();
// add new connections...
this.o2.addSucceedingOperator(new OperatorIDTuple(this.opt, 0));
this.opt.addPrecedingOperator(this.o2);
this.o2.addSucceedingOperator(j);
j.addPrecedingOperator(this.o2);
j.addSucceedingOperator(this.jump_filter_begin);
this.jump_filter_begin.addPrecedingOperator(j);
this.o1.addSucceedingOperator(j);
j.addPrecedingOperator(this.o1);
// additional replace method code...
this.o1.getOperatorIDTuple(j).setId(0);
this.o2.getOperatorIDTuple(j).setId(1);
HashSet<lupos.datastructures.items.Variable> intersectionVariables = new HashSet<lupos.datastructures.items.Variable>();
intersectionVariables.addAll(this.o1.getUnionVariables());
intersectionVariables.retainAll(this.o2.getUnionVariables());
HashSet<lupos.datastructures.items.Variable> unionVariables = new HashSet<lupos.datastructures.items.Variable>();
unionVariables.addAll(this.o1.getUnionVariables());
unionVariables.addAll(this.o2.getUnionVariables());
BasicOperator tmpOp = j;
while(!tmpOp.equals(this.opt)) {
tmpOp.setUnionVariables(unionVariables);
tmpOp.setIntersectionVariables(intersectionVariables);
tmpOp = tmpOp.getSucceedingOperators().get(0).getOperator();
}
this.opt.setUnionVariables(unionVariables);
this.opt.setIntersectionVariables(intersectionVariables);
}
}