BaseColumnDefinitionBuilder.java

/*
 * Copyright 2016 Red Hat, Inc. and/or its affiliates.
 *
 * 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 org.drools.workbench.screens.guided.dtable.client.widget.table.popovers.definitions;

import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import org.drools.workbench.models.datamodel.oracle.DataType;
import org.drools.workbench.models.guided.dtable.shared.model.BaseColumn;
import org.drools.workbench.models.guided.dtable.shared.model.DTCellValue52;
import org.drools.workbench.models.guided.dtable.shared.model.GuidedDecisionTable52;
import org.drools.workbench.screens.guided.dtable.client.widget.table.utilities.ColumnUtilities;
import org.drools.workbench.screens.guided.dtable.service.GuidedDecisionTableEditorService;
import org.jboss.errai.common.client.api.Caller;
import org.uberfire.backend.vfs.Path;
import org.uberfire.client.callbacks.Callback;

public abstract class BaseColumnDefinitionBuilder implements ColumnDefinitionBuilder {

    private static final String WHEN = "when\n";
    private static final String THEN = "then\n";
    private static final String END = "end\n";

    private Caller<GuidedDecisionTableEditorService> service;

    public BaseColumnDefinitionBuilder( final Caller<GuidedDecisionTableEditorService> service ) {
        this.service = service;
    }

    protected void generateDefinitionOnServer( final GuidedDecisionTable52 partialModel,
                                               final Path path,
                                               final Callback<String> afterGenerationCallback ) {
        service.call( ( String source ) -> afterGenerationCallback.callback( source ) ).toSource( path,
                                                                                                  partialModel );

    }

    protected List<DTCellValue52> makeRowData( final ColumnUtilities columnUtilities,
                                               final BaseColumn column ) {
        final List<DTCellValue52> row = new ArrayList<>();
        row.add( new DTCellValue52( 1 ) );
        row.add( new DTCellValue52( "desc" ) );

        final DataType.DataTypes dataType = columnUtilities.getDataType( column );
        row.add( makeCell( dataType ) );
        return row;
    }

    protected DTCellValue52 makeCell( final DataType.DataTypes dataType ) {
        switch ( dataType ) {
            case NUMERIC:
            case NUMERIC_BIGDECIMAL:
            case NUMERIC_BIGINTEGER:
            case NUMERIC_BYTE:
            case NUMERIC_DOUBLE:
            case NUMERIC_FLOAT:
            case NUMERIC_INTEGER:
            case NUMERIC_LONG:
            case NUMERIC_SHORT:
                return new DTCellValue52( 1 );
            case DATE:
                return new DTCellValue52( new Date() );
            case BOOLEAN:
                return new DTCellValue52( true );
        }
        return new DTCellValue52( "x" );
    }

    protected String getLHS( final String drl ) {
        return strip( drl,
                      WHEN,
                      THEN );
    }

    protected String getRHS( final String drl ) {
        return strip( drl,
                      THEN,
                      END );
    }

    protected String strip( final String drl,
                            final String blockStartTag,
                            final String blockEndTag ) {
        final String _drl = drl.toLowerCase();
        final int start = _drl.indexOf( blockStartTag );
        final int end = _drl.indexOf( blockEndTag );
        if ( start < 0 || end < 0 || end < start ) {
            return drl;
        }
        return drl.substring( start + blockStartTag.length(),
                              end ).trim().replaceAll( "\t",
                                                       "" ).replaceAll( "\n", "<br/>" );
    }

}