hydrograph.ui.graph.schema.propagation.SequenceFieldPropagation.java Source code

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Here is the source code for hydrograph.ui.graph.schema.propagation.SequenceFieldPropagation.java

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/*******************************************************************************
 * Copyright 2017 Capital One Services, LLC and Bitwise, 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.
 *******************************************************************************/

package hydrograph.ui.graph.schema.propagation;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.commons.lang.StringUtils;
import org.eclipse.swt.widgets.Text;

import hydrograph.ui.common.util.Constants;
import hydrograph.ui.datastructure.property.BasicSchemaGridRow;
import hydrograph.ui.datastructure.property.ComponentsOutputSchema;
import hydrograph.ui.datastructure.property.FixedWidthGridRow;
import hydrograph.ui.datastructure.property.GridRow;
import hydrograph.ui.datastructure.property.Schema;
import hydrograph.ui.graph.model.Component;

/**
 * This class is used to propagate sequence field of unique sequence component.
 * 
 * @author Bitwise
 *
 */
public class SequenceFieldPropagation {

    public static final SequenceFieldPropagation INSTANCE = new SequenceFieldPropagation();

    /**
     * This method loads the sequence field and propagate into the schema.
     * 
     * @param internalSchemaGridRows
     * @param component
     * @param textBox
     * @param newFieldSchema
     */
    public void loadAndPropagateSequenceField(List<GridRow> internalSchemaGridRows, Component component,
            Text textBox, BasicSchemaGridRow newFieldSchema) {
        String previousValue = (String) component.getProperties().get(Constants.UNIQUE_SEQUENCE_PROPERTY_NAME);
        if (StringUtils.isNotBlank(previousValue)) {
            removePreviousSequenceFieldFromSchema(internalSchemaGridRows, previousValue);
        }
        Schema schema = (Schema) component.getProperties().get(Constants.SCHEMA);

        if (schema != null && internalSchemaGridRows.isEmpty()) {
            removePreviousSequenceFieldFromSchema(schema.getGridRow(), previousValue);
            internalSchemaGridRows.addAll(schema.getGridRow());
        }
        if (StringUtils.isNotBlank(textBox.getText())) {
            internalSchemaGridRows.add(newFieldSchema);
        }
        if (internalSchemaGridRows != null && !internalSchemaGridRows.isEmpty()) {
            Map<String, ComponentsOutputSchema> schemaMap = new HashMap<>();
            ComponentsOutputSchema componentsOutputSchema = new ComponentsOutputSchema();
            List<FixedWidthGridRow> fixedWidthGridRows = SchemaPropagation.INSTANCE
                    .convertGridRowsSchemaToFixedSchemaGridRows(internalSchemaGridRows);
            componentsOutputSchema.setFixedWidthGridRowsOutputFields(fixedWidthGridRows);
            schemaMap.put(Constants.FIXED_OUTSOCKET_ID, componentsOutputSchema);
            component.getProperties().put(Constants.SCHEMA_TO_PROPAGATE, schemaMap);
        }
    }

    private void removePreviousSequenceFieldFromSchema(List<GridRow> gridRows, String previousValue) {
        if (!gridRows.isEmpty()) {
            GridRow gridRow = gridRows.get(gridRows.size() - 1);
            if (StringUtils.equalsIgnoreCase(gridRow.getFieldName(), previousValue)
                    && StringUtils.equalsIgnoreCase(Long.class.getCanonicalName(), gridRow.getDataTypeValue())) {
                gridRows.remove(gridRow);
            }
        }
    }
}