lpmodel.java

著名IT公司ILog的APS高级排产优化引擎

package com.power.pipeengine.LPModel;

import java.util.*;
import java.io.*;
import com.power.pipeengine.Variable.*;
import com.power.pipeengine.Constraint.*;
import com.power.pipeengine.InputData.*;
import com.power.pipe.*;

public class LPModel
{
    private static final LPModel INSTANCE =
                              new LPModel();

   // Private constructor supresses
   // default public constructor
    private LPModel( ) {
    }

    public static LPModel getInstance( ) {
        return INSTANCE;
    }

	private String _objectiveSense = "Min ";
	private String _subjectTo = "Subject to:\n";

	public String getObjectiveSense() {
		return _objectiveSense;
	}

	private String _objectiveFunction = new String();

	public String getObjectiveFunction() {
		return getObjectiveSense() + _objectiveFunction;
	}

	public void addObjFuncElement( String aString ) {
		_objectiveFunction += aString;
	}

	public String getFileName() {
		return "\\lpmodel.lp";
	}

	public void buildLPModel() throws Exception {
		String outDir = GlobalConfig.getInstance().getOutputDirectory();

		//DataOutputStream out = new DataOutputStream(
									//new FileOutputStream( outDir + getFileName() ) );


		//FileWriter out = new FileWriter( outDir + getFileName() );


		Vector invConstr = InventoryConstraint.getInstance().getConstraints();

		for( int i=0; i<invConstr.size(); i++ ) {
			System.out.print( (String) invConstr.elementAt(i) + "\n" );
		}

		Vector soConstr = StartsOutsConstraint.getInstance().getConstraints();

		for( int i=0; i<soConstr.size(); i++ ) {
			System.out.print( (String) soConstr.elementAt(i) + "\n" );
		}

		/*Vector capConstr = CapacityConstraint.getInstance().getConstraints();

		for( int i=0; i<capConstr.size(); i++ ) {
			System.out.print( (String) capConstr.elementAt(i) + "\n" );
		}*/

		Vector srcingConstr = SourcingConstraint.getInstance().getConstraints();

		for( int i=0; i<srcingConstr.size(); i++ ) {
			System.out.print( (String) srcingConstr.elementAt(i) + "\n" );
		}

		Vector shipConstr = ShipmentConstraint.getInstance().getConstraints();

		for( int i=0; i<shipConstr.size(); i++ ) {
			System.out.print( (String) shipConstr.elementAt(i) + "\n" );
		}

		Vector matConstr = MaterialConstraint.getInstance().getConstraints();

		for( int i=0; i<matConstr.size(); i++ ) {
			System.out.print( (String) matConstr.elementAt(i) + "\n" );
		}

		Vector bndConstr = ProductBoundConstraint.getInstance().getConstraints();

		for( int i=0; i<bndConstr.size(); i++ ) {
			System.out.print( (String) bndConstr.elementAt(i) + "\n" );
		}

		Vector minInvConstr = MinInvConstraint.getInstance().getConstraints();

		for( int i=0; i<minInvConstr.size(); i++ ) {
			System.out.print( (String) minInvConstr.elementAt(i) + "\n" );
		}

		System.out.print( "end\n" );

		//out.close();
	}



}