/**
* 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.camel.component.hl7;
import ca.uhn.hl7v2.HL7Exception;
import ca.uhn.hl7v2.model.Message;
import ca.uhn.hl7v2.util.Terser;
import org.apache.camel.Exchange;
import org.apache.camel.Expression;
import org.apache.camel.Predicate;
import org.apache.camel.spi.Language;
import org.apache.camel.support.ExpressionAdapter;
import org.apache.camel.util.ExpressionToPredicateAdapter;
import org.apache.camel.util.ObjectHelper;
public class TerserLanguage implements Language {
public static Expression terser(final String expression) {
ObjectHelper.notNull(expression, "expression");
return new ExpressionAdapter() {
@Override
public Object evaluate(Exchange exchange) {
Message message = exchange.getIn().getBody(Message.class);
try {
return new Terser(message).get(expression.trim());
} catch (HL7Exception e) {
throw ObjectHelper.wrapRuntimeCamelException(e);
}
}
@Override
public String toString() {
return "terser(" + expression + ")";
}
};
}
@Override
public Predicate createPredicate(String expression) {
return ExpressionToPredicateAdapter.toPredicate(createExpression(expression));
}
@Override
public Expression createExpression(String expression) {
return terser(expression);
}
}