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/*
* Copyright 2000-2013 Vaadin Ltd.
*
* Licensed 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 "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.vaadin.data.util;
import java.io.Serializable;
import java.util.logging.Level;
import java.util.logging.Logger;
import com.vaadin.data.Property;
import com.vaadin.server.Constants;
import com.vaadin.server.DeploymentConfiguration.LegacyProperyToStringMode;
import com.vaadin.server.VaadinService;
/**
* Helper class which provides methods for handling Property.toString in a
* Vaadin 6 compatible way
*
* @author Vaadin Ltd
* @since 7.1
* @deprecated This is only used internally for backwards compatibility
*/
@Deprecated
public class LegacyPropertyHelper implements Serializable {
/**
* Returns the property value converted to a String.
*
* @param p
* The property
* @return A string representation of the property value, compatible with
* how Property implementations in Vaadin 6 do it
*/
public static String legacyPropertyToString(Property p) {
maybeLogLegacyPropertyToStringWarning(p);
Object value = p.getValue();
if (value == null) {
return null;
}
return value.toString();
}
public static void maybeLogLegacyPropertyToStringWarning(Property p) {
if (!logLegacyToStringWarning()) {
return;
}
getLogger().log(Level.WARNING,
Constants.WARNING_LEGACY_PROPERTY_TOSTRING,
p.getClass().getName());
}
/**
* Checks if legacy Property.toString() implementation is enabled. The
* legacy Property.toString() will return the value of the property somehow
* converted to a String. If the legacy mode is disabled, toString() will
* return super.toString().
* <p>
* The legacy toString mode can be toggled using the
* "legacyPropertyToString" init parameter
* </p>
*
* @return true if legacy Property.toString() mode is enabled, false
* otherwise
*/
public static boolean isLegacyToStringEnabled() {
if (VaadinService.getCurrent() == null) {
// This will happen at least in JUnit tests. We do not what the real
// value should be but it seems more safe to use the legacy mode.
return true;
}
return VaadinService.getCurrent().getDeploymentConfiguration()
.getLegacyPropertyToStringMode().useLegacyMode();
}
private static boolean logLegacyToStringWarning() {
if (VaadinService.getCurrent() == null) {
// This will happen at least in JUnit tests. We do not want to spam
// the log with these messages in this case.
return false;
}
return VaadinService.getCurrent().getDeploymentConfiguration()
.getLegacyPropertyToStringMode() == LegacyProperyToStringMode.WARNING;
}
private static Logger getLogger() {
return Logger.getLogger(LegacyPropertyHelper.class.getName());
}
}
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