/*
* 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.isis.core.metamodel.facets.value.string;
import org.apache.isis.applib.adapters.EncoderDecoder;
import org.apache.isis.applib.adapters.Parser;
import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
import org.apache.isis.core.metamodel.facetapi.Facet;
import org.apache.isis.core.metamodel.facetapi.FacetHolder;
import org.apache.isis.core.metamodel.facets.object.value.vsp.ValueSemanticsProviderAndFacetAbstract;
import org.apache.isis.core.metamodel.services.ServicesInjector;
public class StringValueSemanticsProvider extends ValueSemanticsProviderAndFacetAbstract<String> implements StringValueFacet {
public static Class<? extends Facet> type() {
return StringValueFacet.class;
}
public static final int TYPICAL_LENGTH = 25;
private static final String DEFAULT_VALUE = null; // no default
/**
* Required because implementation of {@link Parser} and
* {@link EncoderDecoder}.
*/
public StringValueSemanticsProvider() {
this(null, null);
}
public StringValueSemanticsProvider(final FacetHolder holder, final ServicesInjector context) {
super(type(), holder, String.class, TYPICAL_LENGTH, null, Immutability.IMMUTABLE, EqualByContent.HONOURED, DEFAULT_VALUE, context);
}
// //////////////////////////////////////////////////////////////////
// Parser
// //////////////////////////////////////////////////////////////////
@Override
protected String doParse(final Object context, final String entry) {
if (entry.trim().equals("")) {
return null;
} else {
return entry;
}
}
@Override
public String titleString(final Object object) {
final String string = (String) (object == null ? "" : object);
return string;
}
@Override
public String titleStringWithMask(final Object object, final String usingMask) {
return titleString(object);
}
// //////////////////////////////////////////////////////////////////
// EncoderDecoder
// //////////////////////////////////////////////////////////////////
@Override
protected String doEncode(final Object object) {
final String text = (String) object;
if (text.equals("NULL") || isEscaped(text)) {
return escapeText(text);
} else {
return text;
}
}
@Override
protected String doRestore(final String data) {
if (isEscaped(data)) {
return data.substring(1);
} else {
return data;
}
}
private boolean isEscaped(final String text) {
return text.startsWith("/");
}
private String escapeText(final String text) {
return "/" + text;
}
// //////////////////////////////////////////////////////////////////
// StringValueFacet
// //////////////////////////////////////////////////////////////////
@Override
public String stringValue(final ObjectAdapter object) {
return object == null ? "" : (String) object.getObject();
}
@Override
public ObjectAdapter createValue(final String value) {
return getAdapterManager().adapterFor(value);
}
// /////// toString ///////
@Override
public String toString() {
return "StringValueSemanticsProvider";
}
}