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/*-
* ============LICENSE_START=======================================================
* SDC
* ================================================================================
* Copyright (C) 2019 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.onap.sdc.dcae.catalog.commons;
import java.util.Map;
import java.util.function.Function;
import java.util.function.BiFunction;
import org.apache.commons.beanutils.ConvertUtils;
import org.apache.commons.beanutils.Converter;
import org.json.JSONObject;
import org.onap.sdc.dcae.catalog.commons.Proxy;
import org.onap.sdc.dcae.catalog.commons.ProxyBuilder;
public class ProxyBuilder {
private Map<String, ?> context;
private Map<String, BiFunction<Proxy, Object[], Object>> extensions;
public ProxyBuilder() {
}
public <T> T build(Map theData, Class<T> theType) {
return build(new JSONObject(theData), theType);
}
public <T> T build(JSONObject theData, Class<T> theType) {
return (T)java.lang.reflect.Proxy.newProxyInstance(
ProxyBuilder.class.getClassLoader(),
new Class[] { theType },
new Proxy(theData, this));
}
public ProxyBuilder withConverter(final Function<Object, ?> theConverter, Class theType) {
ConvertUtils.register(new Converter() {
public Object convert(Class theToType, Object theValue) {
return theConverter.apply(theValue);
}
},
theType);
return this;
}
/*
plug in an extension to the proxy default behaviour.
*/
public ProxyBuilder withExtensions(Map<String, BiFunction<Proxy, Object[], Object>> theExtensions) {
this.extensions = theExtensions;
return this;
}
public ProxyBuilder withContext(Map<String, ?> theContext) {
this.context = theContext;
return this;
}
protected Object context(String theName) {
return this.context == null ? null : this.context.get(theName);
}
protected BiFunction<Proxy, Object[], Object> extension(String theName) {
return this.extensions == null ? null : this.extensions.get(theName);
}
protected boolean hasExtension(String theName) {
return this.extensions == null ? false : this.extensions.containsKey(theName);
}
}
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