net.hasor.dataql.runtime.mem.RefLambdaCall Maven / Gradle / Ivy
/*
* Copyright 2008-2009 the original author or authors.
*
* 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.
*/
package net.hasor.dataql.runtime.mem;
import net.hasor.dataql.Hints;
import net.hasor.dataql.Udf;
import net.hasor.dataql.domain.DataModel;
import net.hasor.dataql.runtime.InsetProcessContext;
import net.hasor.dataql.runtime.InstSequence;
import net.hasor.dataql.runtime.inset.OpcodesPool;
/**
* 代理 Lambda 使其成为 UDF.
* @author 赵永春 ([email protected])
* @version : 2017-03-23
*/
public class RefLambdaCall implements Udf {
private final InstSequence instSequence;
private final DataHeap dataHeap;
private final EnvStack envStack;
private final InsetProcessContext context;
public RefLambdaCall(InstSequence instSequence, DataHeap dataHeap, EnvStack envStack, InsetProcessContext context) {
this.instSequence = instSequence;
this.dataHeap = dataHeap;
this.envStack = envStack;
this.context = context;
}
@Override
public Object call(Hints readOnly, Object... params) throws Throwable {
//
DataStack cloneStack = new DataStack() {{
push(new RefLambdaCallStruts(params));
}};
//
InstSequence instSequence = this.instSequence.clone();
OpcodesPool opcodesPool = OpcodesPool.defaultOpcodesPool();
DataHeap dataHeap = new DataHeap(this.dataHeap);
while (instSequence.hasNext()) {
opcodesPool.doWork( //
instSequence, //
dataHeap, //
cloneStack, //
this.envStack, //
this.context //
);
instSequence.doNext(1);
}
DataModel result = cloneStack.getResult();
if (cloneStack.getExitType() != ExitType.Throw) {
return result.unwrap();
} else {
throw new RefLambdaCallException( //
instSequence.programLocation(), //
cloneStack.getResultCode(), //
cloneStack.getResult() //
);
}
}
}