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Private implementation of the Apache MyFaces Trinidad project
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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* 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
* "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 org.apache.myfaces.trinidadinternal.convert;
import java.math.BigInteger;
import javax.faces.FacesException;
import javax.faces.application.Application;
import javax.faces.application.FacesMessage;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.convert.Converter;
import javax.faces.convert.ConverterException;
import org.apache.myfaces.trinidad.logging.TrinidadLogger;
import org.apache.myfaces.trinidad.util.MessageFactory;
import org.apache.myfaces.trinidadinternal.ui.laf.base.xhtml.XhtmlLafUtils;
/**
* Private utilities for working with converters
*/
public class ConverterUtils
{
private ConverterUtils()
{
}
/**
* This is integer in the mathematical sense, not the java sense.
* This method is called when a ConverterException has already occurred
*/
public static final ConverterException getIntegerConverterException(
FacesContext context,
UIComponent component,
ConverterException originalCE,
String value,
String convertMessageId,
String maxMessageId,
String maxString,
String minMessageId,
String minString
)
{
// value should never be null, but just in case check for it
if (value != null)
{
value = value.trim();
try
{
// if this throws an NFE then value isn't an integer
/*BigInteger bi = */new BigInteger(value);
// value is a number but it's out of range. See if it's a
// positive or negative number.
boolean isNegative = false;
if (value.startsWith("-"))
isNegative = true;
if (isNegative)
{
return createConverterException(context,
component,
minMessageId,
value,
minString);
}
else
{
return createConverterException(context,
component,
maxMessageId,
value,
maxString);
}
}
catch (NumberFormatException nfe)
{
return createConverterException(context,
component,
convertMessageId,
value);
}
}
return originalCE;
}
public static final ConverterException createConverterException(
FacesContext context,
UIComponent component,
String messageId,
String value
)
{
return createConverterException(context, component,
messageId, value, null);
}
public static final ConverterException createConverterException(
FacesContext context,
UIComponent component,
String messageId,
String value,
String param
)
{
Object label = _getLabel(component);
FacesMessage message = MessageFactory.getMessage(context,
messageId,
new Object[]{label, value, param},
label);
return new ConverterException(message);
}
// We currently use 'label' for the validation failed message
private static final Object _getLabel(
UIComponent component
)
{
Object o = component.getAttributes().get("label");
if (o == null)
o = component.getValueBinding("label");
return o;
}
/**
* Create a converter for a type.
*/
static public Converter createConverter(
FacesContext context,
Class converterType)
{
// Don't bother for Objects; note that the 1.1_01 RI
// returns null, but the spec requires a FacesException, and MyFaces
// correctly implements that.
// https://issues.apache.org/jira/browse/TRINIDAD-1117
// Note - JSF 1.2 allows converter for String: https://javaserverfaces-spec-public.dev.java.net/issues/show_bug.cgi?id=131
if (converterType == null ||
converterType == Object.class)
{
return null;
}
// if getType returns a type for which we support a default
// conversion, acquire an appropriate converter instance.
try
{
Application application = context.getApplication();
return application.createConverter(converterType);
}
catch (FacesException e)
{
_LOG.warning("CANNOT_CREATE_CONVERTER_LIKELY_BECAUSE_NO_CONVERTER_REGISTERED", converterType.toString());
return null;
}
}
/**
* @deprecated method needs to an overhaul
*/
@Deprecated
public static String getClientValidation(
FacesContext context,
UIComponent component,
String maxId,
String minId,
String defaultId,
String maxVal,
String minVal,
String type)
{
return _getClientConversion(context, component, maxId, minId, defaultId,
maxVal, minVal, false, type);
}
public static String getClientConversion(
FacesContext context,
UIComponent component,
String maxId,
String minId,
String defaultId,
String maxVal,
String minVal)
{
return _getClientConversion(context, component, maxId, minId, defaultId,
maxVal, minVal, true, null);
}
private static String _getClientConversion(
FacesContext context,
UIComponent component,
String maxId,
String minId,
String defaultId,
String maxVal,
String minVal,
boolean isConverter,
String validatorType)
{
StringBuilder outBuffer = new StringBuilder(250);
if (isConverter)
outBuffer.append("new TrNumberConverter(");
else
outBuffer.append("new " + validatorType + "(");
outBuffer.append("{LV:'");
FacesMessage maxMessage =
MessageFactory.getMessage(context, maxId,
new Object[]{"{0}", "{1}", maxVal});
outBuffer.append(XhtmlLafUtils.escapeJS(maxMessage.getDetail()));
outBuffer.append("',LV_S:'");
outBuffer.append(XhtmlLafUtils.escapeJS(maxMessage.getSummary()));
outBuffer.append("',MV:'");
FacesMessage minMessage =
MessageFactory.getMessage(context, minId,
new Object[]{"{0}", "{1}", minVal});
outBuffer.append(XhtmlLafUtils.escapeJS(minMessage.getDetail()));
outBuffer.append("',MV_S:'");
outBuffer.append(XhtmlLafUtils.escapeJS(minMessage.getSummary()));
outBuffer.append("',D:'");
FacesMessage defaultMessage =
MessageFactory.getMessage(context, defaultId,
new Object[]{"{0}", "{1}"});
outBuffer.append(XhtmlLafUtils.escapeJS(defaultMessage.getDetail()));
outBuffer.append("',D_S:'");
outBuffer.append(XhtmlLafUtils.escapeJS(defaultMessage.getSummary()));
outBuffer.append("'},null,0,");
outBuffer.append(maxVal);
outBuffer.append(',');
outBuffer.append(minVal);
outBuffer.append(")");
return outBuffer.toString();
}
/**
* @deprecated not used currently
* @param context
* @param component
* @param defaultId
* @return
*/
@Deprecated
public static String getClientConversion(
FacesContext context,
UIComponent component,
String defaultId)
{
StringBuilder outBuffer = new StringBuilder(250);
outBuffer.append("new TrNumberConverter(");
outBuffer.append("{D:'");
FacesMessage defaultMessage =
MessageFactory.getMessage(context, defaultId,
new Object[]{"{0}", "{1}"});
outBuffer.append(XhtmlLafUtils.escapeJS(defaultMessage.getDetail()));
outBuffer.append("',D_S:'");
outBuffer.append(XhtmlLafUtils.escapeJS(defaultMessage.getSummary()));
outBuffer.append("'})");
return outBuffer.toString();
}
static private final TrinidadLogger _LOG =
TrinidadLogger.createTrinidadLogger(ConverterUtils.class);
}