/*
* JBoss, Home of Professional Open Source.
* See the COPYRIGHT.txt file distributed with this work for information
* regarding copyright ownership. Some portions may be licensed
* to Red Hat, Inc. under one or more contributor license agreements.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA.
*/
package org.teiid.translator.google.visitor;
import static org.teiid.language.SQLConstants.Reserved.*;
import org.teiid.core.types.DataTypeManager;
import org.teiid.core.util.StringUtil;
import org.teiid.language.Comparison;
import org.teiid.language.Comparison.Operator;
import org.teiid.language.Condition;
import org.teiid.language.Function;
import org.teiid.language.Like;
import org.teiid.language.Literal;
import org.teiid.language.visitor.SQLStringVisitor;
import org.teiid.translator.TypeFacility;
import org.teiid.translator.google.SpreadsheetExecutionFactory;
import org.teiid.translator.google.api.SpreadsheetOperationException;
import org.teiid.translator.google.api.metadata.SpreadsheetInfo;
/**
* Base visitor for criteria
*
* @author felias
*
*/
public class SpreadsheetCriteriaVisitor extends SQLStringVisitor {
protected String worksheetKey;
protected String criteriaQuery;
protected SpreadsheetInfo info;
protected String worksheetTitle;
public SpreadsheetCriteriaVisitor(SpreadsheetInfo info) {
this.info = info;
}
public void visit(Literal obj) {
if (!isUpdate()) {
super.visit(obj);
return;
}
if (obj.getValue() == null) {
buffer.append(NULL);
return;
}
Class<?> type = obj.getType();
if (Number.class.isAssignableFrom(type)) {
buffer.append(obj.toString());
return;
} else if (obj.getType().equals(DataTypeManager.DefaultDataClasses.DATE)
|| obj.getType().equals(DataTypeManager.DefaultDataClasses.BOOLEAN)) {
buffer.append(obj.getValue().toString());
return;
} else if (obj.getType().equals(DataTypeManager.DefaultDataClasses.TIME)
|| obj.getType().equals(DataTypeManager.DefaultDataClasses.TIMESTAMP)) {
throw new SpreadsheetOperationException(SpreadsheetExecutionFactory.UTIL.gs("time_not_supported")); //$NON-NLS-1$
} else {
buffer.append("\""); //$NON-NLS-1$
buffer.append(StringUtil.replace(obj.getValue().toString(), "\"", "\"\"")); //$NON-NLS-1$ //$NON-NLS-2$
buffer.append("\""); //$NON-NLS-1$
return;
}
}
public void visit(Like obj) {
if (isUpdate()) {
throw new SpreadsheetOperationException("Like is not supported in DELETE and UPDATE queires");
}
super.visit(obj);
}
@Override
public void visit(Function obj) {
if (isUpdate()) {
throw new SpreadsheetOperationException("Function is not supported in DELETE and UPDATE queires");
}
super.visit(obj);
}
@Override
protected String replaceElementName(String group, String element) {
return element.toLowerCase();
}
public String getWorksheetKey() {
return worksheetKey;
}
public String getCriteriaQuery() {
return criteriaQuery;
}
public void setCriteriaQuery(String criteriaQuery) {
this.criteriaQuery = criteriaQuery;
}
public String getWorksheetTitle() {
return worksheetTitle;
}
public void translateWhere(Condition condition) {
if (condition != null) {
StringBuilder temp = this.buffer;
this.buffer = new StringBuilder();
append(condition);
criteriaQuery = buffer.toString();
this.buffer = temp;
}
}
public void visit(Comparison obj) {
boolean addNot = false;
if ((!isUpdate() || obj.getLeftExpression().getType() != TypeFacility.RUNTIME_TYPES.STRING)
&& (obj.getOperator() == Operator.NE
|| obj.getOperator() == Operator.LT
|| obj.getOperator() == Operator.LE
|| (obj.getOperator() == Operator.EQ && !(obj.getRightExpression() instanceof Literal)))) {
addNot = true;
buffer.append("("); //$NON-NLS-1$
}
super.visit(obj);
if (addNot) {
buffer.append(" AND "); //$NON-NLS-1$
visitNode(obj.getLeftExpression());
if (!isUpdate()) {
buffer.append(" IS NOT NULL)"); //$NON-NLS-1$
} else {
buffer.append(" <> \"\")"); //$NON-NLS-1$
}
}
}
protected boolean isUpdate() {
return true;
}
}