ro.nextreports.designer.querybuilder.ResultSetTableModel.java Source code

Introduction

Here is the source code for ro.nextreports.designer.querybuilder.ResultSetTableModel.java

Source

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 ro.nextreports.designer.querybuilder;

import java.sql.Types;

import javax.swing.table.AbstractTableModel;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import ro.nextreports.engine.queryexec.QueryResult;
import ro.nextreports.engine.util.DialectUtil;

/**
 * This class is the base class for the scrolling and the
 *  caching result set table model. It stores the result.
 *  
 * @author Decebal Suiu
 */
public abstract class ResultSetTableModel extends AbstractTableModel {

    public static final String NULL_VALUE = "( null )";
    public static final String BLOB_VALUE = "( blob )";
    public static final String CLOB_VALUE = "( clob )";

    private static final Log LOG = LogFactory.getLog(ResultSetTableModel.class);

    protected QueryResult result;

    public ResultSetTableModel(QueryResult result) {
        this.result = result;
    }

    /**
     * Get class that represents column type.
     */
    public Class getColumnClass(int column) {
        if (result == null) {
            return Object.class;
        }

        try {
            String className = result.getColumnClassName(column);
            if (!isBlobColumn(column) && !isClobColumn(column)) {
                return Class.forName(DialectUtil.getFullColumnClassName(className));
            }
        } catch (Exception e) {
            LOG.error(e.getMessage(), e);
            e.printStackTrace();
            //            throw new IllegalStateException(e);
        }

        return Object.class;
    }

    /**
     * Get number of columns.
     */
    public int getColumnCount() {
        if (result == null) {
            return 0;
        }

        return result.getColumnCount();
    }

    /**
     * Get name of a particular column.
     */
    @Override
    public String getColumnName(int column) {
        if (result == null) {
            return "";
        }

        return result.getColumnName(column);
    }

    protected boolean isBlobColumn(int column) {
        return result.getColumnType(column) == Types.BLOB;
    }

    protected boolean isClobColumn(int column) {
        return result.getColumnType(column) == Types.CLOB;
    }

}