/**
* 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.gui.operatorgraph.visualeditor.queryeditor.operators;
import java.util.HashSet;
import java.util.LinkedList;
import lupos.gui.operatorgraph.prefix.Prefix;
import lupos.gui.operatorgraph.visualeditor.operators.Operator;
import lupos.gui.operatorgraph.visualeditor.queryeditor.guielements.RetrieveDataPanel;
import lupos.gui.operatorgraph.visualeditor.util.ModificationException;
import lupos.misc.util.OperatorIDTuple;
import lupos.sparql1_1.ASTQuotedURIRef;
import lupos.sparql1_1.ASTVar;
import lupos.sparql1_1.SimpleNode;
public abstract class RetrieveDataWithProjectionAndSolutionModifier extends RetrieveDataWithSolutionModifier {
protected LinkedList<String> projectionElements = new LinkedList<String>();
protected RetrieveDataWithProjectionAndSolutionModifier(Prefix prefix) {
super(prefix);
}
protected abstract SimpleNode parseProjectionElement(String projectionElement) throws Throwable;
public void addProjectionElement(String projectionElement) throws ModificationException {
try {
SimpleNode node = this.parseProjectionElement(projectionElement);
if(node instanceof ASTVar) {
this.projectionElements.add(((ASTVar) node).toQueryString());
}
else if(node instanceof ASTQuotedURIRef) {
this.projectionElements.add(((ASTQuotedURIRef) node).toQueryString());
}
}
catch(Throwable t) {
this.handleParseError(t);
}
}
public void setProjectionElement(int index, String projectionElement) throws ModificationException {
try {
// new element...
if(this.projectionElements.size() == index) {
this.projectionElements.add("");
}
// parse new value
SimpleNode node = this.parseProjectionElement(projectionElement);
// remove old value...
if(this.projectionElements.get(index) != null) {
this.projectionElements.remove(index);
}
// add new value...
if(node instanceof ASTVar) {
this.projectionElements.add(index, ((ASTVar) node).toQueryString());
}
else if(node instanceof ASTQuotedURIRef) {
this.projectionElements.add(index, ((ASTQuotedURIRef) node).toQueryString());
}
}
catch(Throwable t) {
this.handleParseError(t);
}
}
public void removeProjectionElement(int index) {
if(index == this.projectionElements.size()) {
return;
}
this.projectionElements.remove(index);
}
public LinkedList<String> getProjectionElements() {
return this.projectionElements;
}
public void clearProjectionList() {
this.projectionElements = new LinkedList<String>();
}
public StringBuffer serializeProjections() {
StringBuffer ret = new StringBuffer();
if(this.projectionElements.size() == 0 || !((RetrieveDataPanel) this.panel).getElementStatus("projection")) {
ret.append("*");
}
else {
for(String projectionElement : this.projectionElements) {
ret.append(projectionElement + " ");
}
}
ret.append("\n");
return ret;
}
public boolean variableInUse(String variable, HashSet<Operator> visited) {
if(visited.contains(this)) {
return false;
}
visited.add(this);
if(super.variableInUse(variable, visited)) {
return true;
}
for(String projElement : this.projectionElements) {
if(projElement.equalsIgnoreCase(variable)) {
return true;
}
}
for(OperatorIDTuple<Operator> opIDT : this.succeedingOperators) {
if(opIDT.getOperator().variableInUse(variable, visited)) {
return true;
}
}
return false;
}
}