70 lines
2.1 KiB
Java
70 lines
2.1 KiB
Java
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DBUtil
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package com.ack.util;
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import java.sql.ResultSet;
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import java.sql.ResultSetMetaData;
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import java.sql.SQLException;
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import java.util.HashMap;
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import java.util.LinkedList;
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import java.util.List;
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import java.util.Map;
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/**
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* Provides utilities for database access
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*/
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public class DBUtil {
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/**
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* Produces a string representation of a complete result set
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* @param rs The ResultSet to be displayed
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* @return The string representation
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* @throws SQLException to indicate a problem with the ResultSet
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*/
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public static String dumpResultSet( ResultSet rs ) throws SQLException {
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StringBuffer buf = new StringBuffer();
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if( rs != null ) {
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ResultSetMetaData rsmd = rs.getMetaData();
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int columnCount = rsmd.getColumnCount() + 1;
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for( int i = 1; i < columnCount; i++ ) {
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buf.append( rsmd.getColumnLabel( i ) );
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buf.append( " " );
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}
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buf.append( "\n===========================================\n" );
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while( rs.next() ) {
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for( int i = 1; i < columnCount; i++ ) {
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buf.append( rs.getObject( i ) );
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buf.append( " " );
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}
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buf.append( "\n" );
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}
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}
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return buf.toString();
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}
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/**
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* create a list of map objects. each map object represents a row within the
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* supplied result set that is key against the column name
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*
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* @return List the list of map objects for each row in the ResultSet
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* @param rs the ResultSet to extract the data from
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* @throws SQLException report database problems extracting details from the ResultSet
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*/
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public static List buildListOfMapRecords( ResultSet rs )
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throws SQLException {
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List l = new LinkedList();
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if( rs != null ) {
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ResultSetMetaData rsmd = rs.getMetaData();
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int columnCount = rsmd.getColumnCount() + 1;
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while( rs.next() ) {
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Map map = new HashMap();
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for( int i = 1; i < columnCount; i++ ) {
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map.put( rsmd.getColumnLabel( i ), rs.getObject( i ) );
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}
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l.add( map );
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}
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}
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return l;
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}
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}
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