context.java

jboss规则引擎

package org.drools.benchmark.manners;
/*
 * Copyright 2005 JBoss Inc
 * 
 * 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.
 */





import java.io.Serializable;

public final class Context
    implements
    Serializable {

    public static final int START_UP      = 0;
    public static final int ASSIGN_SEATS  = 1;
    public static final int MAKE_PATH     = 2;
    public static final int CHECK_DONE    = 3;
    public static final int PRINT_RESULTS = 4;
    
    public static final String[] stateStrings = {
                                  "START_UP",
                                  "ASSIGN_SEATS",
                                  "MAKE_PATH",
                                  "CHECK_DONE",
                                  "PRINT_RESULTS"
    };

    private int             state;

    public Context(String state) {
        if ( "start".equals( state ) ) {
            this.state = Context.START_UP;
        } else {
            throw new RuntimeException( "Context '" + state + "' does not exist for Context Enum" );
        }
    }

    public Context(int state) {
        this.state = state;
    }

    public final void setState(int state) {
        this.state = state;
    }

    public final boolean isState(int state) {
        return this.state == state;
    }

    public final int getState() {
        return this.state;
    }

    public final String getStringValue() {
        return stateStrings[this.state];
    }

    public final String toString() {
        return "[Context state=" + getStringValue() + "]";
    }
}