/*******************************************************************************
* Copyright (c) 2010-2013 Redspr Ltd.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Sam Hough - initial API and implementation
*******************************************************************************/
package com.redspr.redquerybuilder.core.client;
import java.util.ArrayList;
import java.util.List;
import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.event.logical.shared.ValueChangeEvent;
import com.google.gwt.event.logical.shared.ValueChangeHandler;
import com.google.gwt.user.client.ui.SimplePanel;
import com.redspr.redquerybuilder.core.client.command.CommandBuilder;
import com.redspr.redquerybuilder.core.client.command.dml.Select;
import com.redspr.redquerybuilder.core.client.engine.Session;
import com.redspr.redquerybuilder.core.client.engine.TableEvent;
import com.redspr.redquerybuilder.core.client.engine.TableEventHandler;
import com.redspr.redquerybuilder.core.client.expression.ExpressionColumn;
import com.redspr.redquerybuilder.core.client.table.TableFilter;
import com.redspr.redquerybuilder.core.client.util.ObjectArray;
import com.redspr.redquerybuilder.core.shared.meta.Column;
public class RedQueryBuilder implements EntryPoint {
private void createCommandBuilder(final Configuration config, String sql, List args)
throws Exception {
final Session session = new Session(config);
final CommandBuilder builder = new CommandBuilder(session, sql, args);
session.getMsgBus().addHandler(TableEvent.TYPE,
new TableEventHandler() {
@Override
public void onTable(TableEvent e) {
if (session.getFilters().size() > 0) {
config.fireOnTableChange(session.getFilters());
// XXX need to do distinct?
ObjectArray expr = ObjectArray.newInstance();
TableFilter tf = session.getFilters().get(0);
String alias = tf.getAlias();
for (Column col : tf.getTable().getColumns()) {
expr.add(new ExpressionColumn(session, null, alias,
col.getName()));
}
builder.getSelect().setExpressions(expr);
} else {
builder.getSelect().setExpressions(null);
}
}
});
builder.addValueChangeHandler(new ValueChangeHandler<Select>() {
@Override
public void onValueChange(ValueChangeEvent<Select> event) {
List<Object> args = new ArrayList<Object>();
String sql = event.getValue().getSQL(args);
config.fireOnSqlChange(sql, args);
}
});
builderContainer.setWidget(builder);
config.fireOnTableChange(session.getFilters());
}
private final SimplePanel builderContainer = new SimplePanel();
@Override
public void onModuleLoad() {
//publish();
}
}