org.moneta.dao.RecordResultSetHandler.java Source code

Introduction

Here is the source code for org.moneta.dao.RecordResultSetHandler.java

Source

/*
 * This software is licensed under the Apache License, Version 2.0
 * (the "License") agreement; 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.moneta.dao;

import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import org.apache.commons.collections4.map.CaseInsensitiveMap;
import org.apache.commons.dbutils.ResultSetHandler;
import org.moneta.types.Record;
import org.moneta.types.Value;

class RecordResultSetHandler implements ResultSetHandler<Record[]> {

    private Long maxRows = null;
    private Long startRow = null;
    private Map<String, String> aliasMap = new CaseInsensitiveMap<String, String>();

    public RecordResultSetHandler() {
    }

    public Record[] handle(ResultSet rSet) throws SQLException {
        ResultSetMetaData meta = rSet.getMetaData();
        List<Record> recordList = new ArrayList<Record>();
        Record record = null;
        List<Value> valueList = null;

        if (startRow != null && startRow > 0) {
            for (int i = 0; i < startRow - 1 && rSet.next(); i++)
                ;
        }

        long nbrRows = 0;
        String columnName;
        while (rSet.next()) {
            record = new Record();
            recordList.add(record);

            valueList = new ArrayList<Value>();
            for (int columnIndex = 1; columnIndex <= meta.getColumnCount(); columnIndex++) {
                // TODO Normalize values (e.g. long varchars, etc.

                // Alias field impl
                columnName = meta.getColumnName(columnIndex);
                if (this.getAliasMap().containsKey(columnName)) {
                    columnName = this.getAliasMap().get(columnName);
                }

                valueList.add(new Value(columnName, rSet.getObject(columnIndex)));
            }
            record.setValues(valueList.toArray(new Value[0]));

            nbrRows++;
            if (maxRows != null && maxRows > 0 && nbrRows >= maxRows) {
                break;
            }
        }

        return recordList.toArray(new Record[0]);
    }

    public Long getMaxRows() {
        return maxRows;
    }

    public void setMaxRows(Long maxRows) {
        this.maxRows = maxRows;
    }

    public Long getStartRow() {
        return startRow;
    }

    public void setStartRow(Long startRow) {
        this.startRow = startRow;
    }

    public Map<String, String> getAliasMap() {
        return aliasMap;
    }

}