package ca.uhn.fhir.rest.param;
/*
* #%L
* HAPI FHIR - Core Library
* %%
* Copyright (C) 2014 University Health Network
* %%
* 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.
* #L%
*/
import static org.apache.commons.lang3.StringUtils.isBlank;
import java.util.List;
import org.apache.commons.lang3.Validate;
import ca.uhn.fhir.context.ConfigurationException;
import ca.uhn.fhir.model.api.IQueryParameterType;
import ca.uhn.fhir.rest.server.exceptions.InvalidRequestException;
public class CompositeParam<A extends IQueryParameterType, B extends IQueryParameterType> implements IQueryParameterType {
private A myLeftType;
private B myRightType;
public CompositeParam(A theLeftInstance, B theRightInstance) {
myLeftType = theLeftInstance;
myRightType = theRightInstance;
}
public CompositeParam(Class<A> theLeftType, Class<B> theRightType) {
Validate.notNull(theLeftType);
Validate.notNull(theRightType);
try {
myLeftType = theLeftType.newInstance();
} catch (InstantiationException e) {
throw new ConfigurationException("Failed to instantiate type: " + myLeftType, e);
} catch (IllegalAccessException e) {
throw new ConfigurationException("Failed to instantiate type: " + myLeftType, e);
}
try {
myRightType = theRightType.newInstance();
} catch (InstantiationException e) {
throw new ConfigurationException("Failed to instantiate type: " + myRightType, e);
} catch (IllegalAccessException e) {
throw new ConfigurationException("Failed to instantiate type: " + myRightType, e);
}
}
/**
* @return Returns the left value for this parameter (the first of two parameters in this composite)
*/
public A getLeftValue() {
return myLeftType;
}
@Override
public String getQueryParameterQualifier() {
return null;
}
/**
* @return Returns the right value for this parameter (the second of two parameters in this composite)
*/
public B getRightValue() {
return myRightType;
}
@Override
public String getValueAsQueryToken() {
StringBuilder b = new StringBuilder();
if (myLeftType != null) {
b.append(myLeftType.getValueAsQueryToken());
}
b.append('$');
if (myRightType != null) {
b.append(myRightType.getValueAsQueryToken());
}
return b.toString();
}
@Override
public void setValueAsQueryToken(String theQualifier, String theValue) {
if (isBlank(theValue)) {
myLeftType.setValueAsQueryToken(theQualifier, "");
myRightType.setValueAsQueryToken(theQualifier, "");
} else {
List<String> parts = ParameterUtil.splitParameterString(theValue, '$', false);
if (parts.size() > 2) {
throw new InvalidRequestException("Invalid value for composite parameter (only one '$' is valid for this parameter, others must be escaped). Value was: " + theValue);
}
myLeftType.setValueAsQueryToken(theQualifier, parts.get(0));
if (parts.size() > 1) {
myRightType.setValueAsQueryToken(theQualifier, parts.get(1));
}
}
}
}