/*
* #%L
* JSQLParser library
* %%
* Copyright (C) 2004 - 2013 JSQLParser
* %%
* This program 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 program 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 General Lesser Public License for more details.
*
* You should have received a copy of the GNU General Lesser Public
* License along with this program. If not, see
* <http://www.gnu.org/licenses/lgpl-2.1.html>.
* #L%
*/
package net.sf.jsqlparser.util.deparser;
import java.util.Iterator;
import net.sf.jsqlparser.expression.Expression;
import net.sf.jsqlparser.expression.ExpressionVisitor;
import net.sf.jsqlparser.expression.operators.relational.ExpressionList;
import net.sf.jsqlparser.expression.operators.relational.ItemsListVisitor;
import net.sf.jsqlparser.expression.operators.relational.MultiExpressionList;
import net.sf.jsqlparser.schema.Column;
import net.sf.jsqlparser.statement.replace.Replace;
import net.sf.jsqlparser.statement.select.SelectVisitor;
import net.sf.jsqlparser.statement.select.SubSelect;
/**
* A class to de-parse (that is, tranform from JSqlParser hierarchy into a
* string) a {@link net.sf.jsqlparser.statement.replace.Replace}
*/
public class ReplaceDeParser implements ItemsListVisitor {
private StringBuilder buffer;
private ExpressionVisitor expressionVisitor;
private SelectVisitor selectVisitor;
public ReplaceDeParser() {
}
/**
* @param expressionVisitor a {@link ExpressionVisitor} to de-parse
* expressions. It has to share the same<br>
* StringBuilder (buffer parameter) as this object in order to work
* @param selectVisitor a {@link SelectVisitor} to de-parse
* {@link net.sf.jsqlparser.statement.select.Select}s. It has to share the
* same<br>
* StringBuilder (buffer parameter) as this object in order to work
* @param buffer the buffer that will be filled with the select
*/
public ReplaceDeParser(ExpressionVisitor expressionVisitor, SelectVisitor selectVisitor, StringBuilder buffer) {
this.buffer = buffer;
this.expressionVisitor = expressionVisitor;
this.selectVisitor = selectVisitor;
}
public StringBuilder getBuffer() {
return buffer;
}
public void setBuffer(StringBuilder buffer) {
this.buffer = buffer;
}
public void deParse(Replace replace) {
buffer.append("REPLACE ").append(replace.getTable().getFullyQualifiedName());
if (replace.getItemsList() != null) {
if (replace.getColumns() != null) {
buffer.append(" (");
for (int i = 0; i < replace.getColumns().size(); i++) {
Column column = replace.getColumns().get(i);
buffer.append(column.getFullyQualifiedName());
if (i < replace.getColumns().size() - 1) {
buffer.append(", ");
}
}
buffer.append(") ");
} else {
buffer.append(" ");
}
} else {
buffer.append(" SET ");
for (int i = 0; i < replace.getColumns().size(); i++) {
Column column = replace.getColumns().get(i);
buffer.append(column.getFullyQualifiedName()).append("=");
Expression expression = replace.getExpressions().get(i);
expression.accept(expressionVisitor);
if (i < replace.getColumns().size() - 1) {
buffer.append(", ");
}
}
}
if (replace.getItemsList() != null) {
// REPLACE mytab SELECT * FROM mytab2
// or VALUES ('as', ?, 565)
if (replace.isUseValues()) {
buffer.append(" VALUES");
}
buffer.append(replace.getItemsList());
}
}
@Override
public void visit(ExpressionList expressionList) {
buffer.append(" VALUES (");
for (Iterator<Expression> iter = expressionList.getExpressions().iterator(); iter.hasNext();) {
Expression expression = iter.next();
expression.accept(expressionVisitor);
if (iter.hasNext()) {
buffer.append(", ");
}
}
buffer.append(")");
}
@Override
public void visit(SubSelect subSelect) {
subSelect.getSelectBody().accept(selectVisitor);
}
public ExpressionVisitor getExpressionVisitor() {
return expressionVisitor;
}
public SelectVisitor getSelectVisitor() {
return selectVisitor;
}
public void setExpressionVisitor(ExpressionVisitor visitor) {
expressionVisitor = visitor;
}
public void setSelectVisitor(SelectVisitor visitor) {
selectVisitor = visitor;
}
@Override
public void visit(MultiExpressionList multiExprList) {
throw new UnsupportedOperationException("Not supported yet.");
}
}