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* Licensed to the Apache Software Foundation (ASF) under one
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* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
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* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
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package org.apache.cayenne.modeler.editor;
import java.awt.Component;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Map;
import java.util.TreeMap;
import javax.swing.DefaultComboBoxModel;
import javax.swing.DefaultListCellRenderer;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JTextField;
import org.apache.log4j.Logger;
import org.apache.cayenne.map.EntityResolver;
import org.apache.cayenne.map.event.QueryEvent;
import org.apache.cayenne.modeler.ProjectController;
import org.apache.cayenne.modeler.util.CayenneWidgetFactory;
import org.apache.cayenne.modeler.util.TextAdapter;
import org.apache.cayenne.property.PropertyUtils;
import org.apache.cayenne.query.Query;
import org.apache.cayenne.query.QueryMetadata;
import org.apache.cayenne.validation.ValidationException;
/**
* A panel that supports editing the properties of a GenericSelectQuery.
*
* @author Andrei Adamchik
*/
public abstract class SelectPropertiesPanel extends JPanel {
private static final Logger logObj = Logger.getLogger(SelectPropertiesPanel.class);
private static final Integer ZERO = new Integer(0);
private static final String NO_CACHE_LABEL = "No Result Caching";
private static final String LOCAL_CACHE_LABEL = "DataContext Cache";
private static final String SHARED_CACHE_LABEL = "Shared Cache";
private static final Object[] CACHE_POLICIES = new Object[] {
QueryMetadata.NO_CACHE, QueryMetadata.LOCAL_CACHE, QueryMetadata.SHARED_CACHE
};
private static final Map cachePolicyLabels = new TreeMap();
static {
cachePolicyLabels.put(QueryMetadata.NO_CACHE, NO_CACHE_LABEL);
cachePolicyLabels.put(QueryMetadata.LOCAL_CACHE, LOCAL_CACHE_LABEL);
cachePolicyLabels.put(QueryMetadata.SHARED_CACHE, SHARED_CACHE_LABEL);
}
protected TextAdapter fetchLimit;
protected TextAdapter pageSize;
protected JComboBox cachePolicy;
protected JCheckBox refreshesResults;
protected ProjectController mediator;
public SelectPropertiesPanel(ProjectController mediator) {
this.mediator = mediator;
initView();
initController();
}
protected void initView() {
fetchLimit = new TextAdapter(new JTextField(7)) {
protected void updateModel(String text) {
setFetchLimit(text);
}
};
pageSize = new TextAdapter(new JTextField(7)) {
protected void updateModel(String text) {
setPageSize(text);
}
};
cachePolicy = CayenneWidgetFactory.createComboBox();
cachePolicy.setRenderer(new CachePolicyRenderer());
refreshesResults = new JCheckBox();
}
protected void initController() {
cachePolicy.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) {
Object policy = cachePolicy.getModel().getSelectedItem();
setQueryProperty("cachePolicy", policy);
}
});
refreshesResults.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) {
Boolean b = refreshesResults.isSelected() ? Boolean.TRUE : Boolean.FALSE;
setQueryProperty("refreshingObjects", b);
}
});
}
/**
* Updates the view from the current model state. Invoked when a currently displayed
* query is changed.
*/
public void initFromModel(Query query) {
EntityResolver resolver = mediator.getCurrentDataDomain().getEntityResolver();
DefaultComboBoxModel cacheModel = new DefaultComboBoxModel(CACHE_POLICIES);
cacheModel.setSelectedItem(query.getMetaData(resolver).getCachePolicy());
cachePolicy.setModel(cacheModel);
fetchLimit.setText(String.valueOf(query.getMetaData(resolver).getFetchLimit()));
pageSize.setText(String.valueOf(query.getMetaData(resolver).getPageSize()));
refreshesResults.setSelected(query.getMetaData(resolver).isRefreshingObjects());
}
void setFetchLimit(String string) {
string = (string == null) ? "" : string.trim();
if (string.length() == 0) {
setQueryProperty("fetchLimit", ZERO);
}
else {
try {
setQueryProperty("fetchLimit", new Integer(string));
}
catch (NumberFormatException nfex) {
throw new ValidationException("Fetch limit must be an integer: " + string);
}
}
}
void setPageSize(String string) {
string = (string == null) ? "" : string.trim();
if (string.length() == 0) {
setQueryProperty("pageSize", ZERO);
}
else {
try {
setQueryProperty("pageSize", new Integer(string));
}
catch (NumberFormatException nfex) {
throw new ValidationException("Page size must be an integer: " + string);
}
}
}
Query getQuery() {
return mediator.getCurrentQuery();
}
public void setEnabled(boolean flag) {
super.setEnabled(flag);
// propagate to children
Container mainPanel = (Container) getComponent(0);
Component[] children = mainPanel.getComponents();
for (int i = 0; i < children.length; i++) {
children[i].setEnabled(flag);
}
}
void setQueryProperty(String property, Object value) {
Query query = getQuery();
if (query != null) {
try {
PropertyUtils.setProperty(query, property, value);
mediator.fireQueryEvent(new QueryEvent(this, query));
}
catch (Exception ex) {
logObj.warn("Error setting property: " + property, ex);
}
}
}
final class CachePolicyRenderer extends DefaultListCellRenderer {
public Component getListCellRendererComponent(
JList list,
Object object,
int arg2,
boolean arg3,
boolean arg4) {
if (object != null) {
object = cachePolicyLabels.get(object);
}
if (object == null) {
object = NO_CACHE_LABEL;
}
return super.getListCellRendererComponent(list, object, arg2, arg3, arg4);
}
}
}