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the hasor DataQL project.
There is a newer version: 4.2.5
/*
 * 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;
import net.hasor.dataql.OperatorProcess;
import net.hasor.dataql.Option;
import net.hasor.dataql.UDF;
import net.hasor.dataql.domain.compiler.QIL;
/**
 * DataQL 运行时。
 * @author 赵永春([email protected])
 * @version : 2017-03-23
 */
public class QueryRuntime extends ClassLoader implements Option {
    private final Option          option     = new OptionSet();
    private final UdfManager      udfManager = new UdfManager();
    private final OperatorManager opeManager = OperatorManager.DEFAULT;
    //
    public QueryRuntime() {
        this(Thread.currentThread().getContextClassLoader());
    }
    public QueryRuntime(ClassLoader loader) {
        super(loader);
    }
    //
    /** 添加 UDF */
    public void addShareUDF(String udfName, UDF udf) {
        this.udfManager.addUDF(udfName, udf);
    }
    //
    /** 根据编译出来的 QueryType，创建对应的执行引擎。 */
    public QueryEngine createEngine(QIL qil) {
        return new QueryEngine(this, qil);
    }
    //
    //
    UDF findUDF(String udfName) {
        return this.udfManager.findUDF(udfName);
    }
    OperatorProcess findOperator(Symbol symbolType, String symbolName, Class fstType, Class secType) {
        return this.opeManager.findOperator(symbolType, symbolName, fstType, secType);
    }
    //
    public Class loadClass(String type) throws ClassNotFoundException {
        return super.loadClass(type);
    }
    @Override
    public String[] getOptionNames() {
        return this.option.getOptionNames();
    }
    @Override
    public Object getOption(String optionKey) {
        return this.option.getOption(optionKey);
    }
    @Override
    public void removeOption(String optionKey) {
        this.option.removeOption(optionKey);
    }
    @Override
    public void setOption(String optionKey, String value) {
        this.option.setOption(optionKey, value);
    }
    @Override
    public void setOption(String optionKey, Number value) {
        this.option.setOption(optionKey, value);
    }
    @Override
    public void setOption(String optionKey, boolean value) {
        this.option.setOption(optionKey, value);
    }
}