mondriandimensionstep.java

来自「数据仓库展示程序」· Java 代码 · 共 85 行

/*
// $Id: //open/mondrian/src/main/mondrian/jolap/MondrianDimensionStep.java#4 $
// This software is subject to the terms of the Common Public License
// Agreement, available at the following URL:
// http://www.opensource.org/licenses/cpl.html.
// (C) Copyright 2002-2005 Kana Software, Inc. and others.
// All Rights Reserved.
// You must accept the terms of that agreement to use this software.
//
// jhyde, Dec 24, 2002
*/
package mondrian.jolap;

import mondrian.olap.Exp;
import mondrian.olap.Util;

import javax.olap.OLAPException;
import javax.olap.query.enumerations.DimensionStepType;
import javax.olap.query.enumerations.DimensionStepTypeEnum;
import javax.olap.query.querycoremodel.CompoundDimensionStep;
import javax.olap.query.querycoremodel.DimensionStep;
import javax.olap.query.querycoremodel.DimensionStepManager;

/**
 * Implementation of {@link DimensionStep}.
 *
 * @author jhyde
 * @since Dec 24, 2002
 * @version $Id: //open/mondrian/src/main/mondrian/jolap/MondrianDimensionStep.java#4 $
 **/
abstract class MondrianDimensionStep extends QueryObjectSupport implements DimensionStep {
    private MondrianDimensionStepManager manager;

    MondrianDimensionStep(MondrianDimensionStepManager manager) {
        super(true);
        this.manager = manager;
    }

    /** Converts this step into a Mondrian expression, taking <code>exp</code>
     * as its input. **/
    abstract Exp convert(Exp exp) throws OLAPException;

    /** Factory method. **/
    static DimensionStep create(
            MondrianDimensionStepManager stepManager, DimensionStepType stepType) {
        if (stepType == DimensionStepTypeEnum.ATTRIBUTE_FILTER) {
            return new MondrianAttributeFilter(stepManager);
        } else if (stepType == DimensionStepTypeEnum.ATTRIBUTE_SORT) {
            throw new UnsupportedOperationException();
        } else if (stepType == DimensionStepTypeEnum.COMPOUND_DIMENSION_STEP) {
            throw new UnsupportedOperationException();
        } else if (stepType == DimensionStepTypeEnum.DATA_BASED_SORT) {
            throw new UnsupportedOperationException();
        } else if (stepType == DimensionStepTypeEnum.DRILL_FILTER) {
            return new MondrianDrillFilter(stepManager);
        } else if (stepType == DimensionStepTypeEnum.EXCEPTION_MEMBER_FILTER) {
            return new MondrianExceptionMemberFilter(stepManager);
        } else if (stepType == DimensionStepTypeEnum.HIERARCHY_MEMBER_FILTER) {
            return new MondrianHierarchyFilter(stepManager);
        } else if (stepType == DimensionStepTypeEnum.HIERARCHICAL_SORT) {
            return new MondrianHierarchyFilter(stepManager);
        } else if (stepType == DimensionStepTypeEnum.LEVEL_FILTER) {
            return new MondrianLevelFilter(stepManager);
        } else if (stepType == DimensionStepTypeEnum.MEMBER_LIST_FILTER) {
            throw new UnsupportedOperationException();
        } else if (stepType == DimensionStepTypeEnum.RANKING_MEMBER_FILTER) {
            return new MondrianRankingMemberFilter(stepManager);
        } else if (stepType == DimensionStepTypeEnum.SINGLE_MEMBER_FILTER) {
            throw new UnsupportedOperationException();
        } else {
            throw Util.newInternal("Unknown DimensionStepType " + stepType);
        }
    }

    public DimensionStepManager getDimensionStepManager() throws OLAPException {
        return manager;
    }

    public CompoundDimensionStep getCompoundDimensionStep() throws OLAPException {
        throw new UnsupportedOperationException();
    }
}

// End MondrianDimensionStep.java