001package votorola.a.count; // Copyright 2009, 2012, Michael Allan. Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Votorola Software"), to deal in the Votorola Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicence, and/or sell copies of the Votorola Software, and to permit persons to whom the Votorola Software is furnished to do so, subject to the following conditions: The preceding copyright notice and this permission notice shall be included in all copies or substantial portions of the Votorola Software. THE VOTOROLA SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE VOTOROLA SOFTWARE OR THE USE OR OTHER DEALINGS IN THE VOTOROLA SOFTWARE. 002 003import java.sql.*; 004import votorola.a.*; 005import votorola.a.voter.*; 006import votorola.g.*; 007import votorola.g.lang.*; 008import votorola.g.logging.*; 009import votorola.g.sql.*; 010 011 012/** The voter input table for all polls. 013 */ 014public final @ThreadSafe class InputTable extends VoterInputTable<PollService> 015{ 016 017 018 /** Partially constructs an InputTable. 019 * 020 * @see #voterService() 021 * @see #init() 022 */ 023 InputTable( PollService _voterService ) { super( _voterService, "in_vote" ); } 024 025 026 027 public @Override void init() throws SQLException 028 { 029 final String sKey = statementKeyBase + "init"; 030 synchronized( database ) 031 { 032 PreparedStatement s = database.statementCache().get( sKey ); 033 if( s == null ) 034 { 035 s = database.connection().prepareStatement( 036 "CREATE TABLE IF NOT EXISTS \"" + tableName + "\"" 037 + " (serviceName character varying," 038 + " voterEmail character varying," 039 + " xml character varying NOT NULL," 040 + " PRIMARY KEY ( serviceName, voterEmail ))" ); 041 database.statementCache().put( sKey, s ); 042 } 043 s.execute(); 044 } 045 } 046 047 048 049 // - V o t e r - I n p u t - T a b l e ------------------------------------------------ 050 051 052 public @Override void delete( final String voterEmail ) throws SQLException 053 { 054 final String sKey = statementKeyBase + "delete"; 055 synchronized( database ) 056 { 057 PreparedStatement s = database.statementCache().get( sKey ); 058 if( s == null ) 059 { 060 s = database.connection().prepareStatement( 061 "DELETE FROM \"" + tableName + "\" WHERE serviceName = ? AND voterEmail = ?" ); 062 database.statementCache().put( sKey, s ); 063 } 064 s.setString( 1, voterService.name() ); 065 s.setString( 2, voterEmail ); 066 s.executeUpdate(); 067 } 068 } 069 070 071 072 public @Override String get( final String voterEmail ) throws SQLException 073 { 074 final String sKey = statementKeyBase + "get"; 075 synchronized( database ) 076 { 077 PreparedStatement s = database.statementCache().get( sKey ); 078 if( s == null ) 079 { 080 s = database.connection().prepareStatement( 081 "SELECT xml FROM \"" + tableName + "\"" 082 + " WHERE serviceName = ? AND voterEmail = ?" ); 083 database.statementCache().put( sKey, s ); 084 } 085 s.setString( 1, voterService.name() ); 086 s.setString( 2, voterEmail ); 087 final ResultSet r = s.executeQuery(); 088 try 089 { 090 if( !r.next() ) return null; 091 092 return r.getString( 1 ); 093 } 094 finally{ r.close(); } 095 } 096 } 097 098 099 100 public @Override void put( final String voterEmail, final String xml, 101 final ServiceSession userSession ) throws BadInputException, SQLException 102 { 103 if( userSession != null) testAccessAllowed( voterEmail, userSession ); 104 lengthConstrained( voterEmail ); 105 LoggerX.i(getClass()).finer( "voter input table " + tableName + ", storing for voter " + voterEmail + " : " + xml ); 106 synchronized( database ) 107 { 108 // effect an "upsert" in PostgreSQL 109 // http://stackoverflow.com/questions/1109061/insert-on-duplicate-update-postgresql/6527838#6527838 110 final Connection c = database.connection(); 111 { 112 final String sKey = statementKeyBase + "putU"; 113 PreparedStatement s = database.statementCache().get( sKey ); 114 if( s == null ) 115 { 116 s = c.prepareStatement( "UPDATE \"" + tableName + "\"" 117 + " SET xml = ? WHERE serviceName = ? AND voterEmail = ?" ); 118 database.statementCache().put( sKey, s ); 119 } 120 s.setString( 1, xml ); 121 s.setString( 2, voterService.name() ); 122 s.setString( 3, voterEmail ); 123 final int updatedRows = s.executeUpdate(); 124 if( updatedRows > 0 ) { assert updatedRows == 1; return; } 125 } 126 { 127 final String sKey = statementKeyBase + "putI"; 128 PreparedStatement s = database.statementCache().get( sKey ); 129 if( s == null ) 130 { 131 s = c.prepareStatement( "INSERT INTO \"" + tableName + "\"" 132 + " (serviceName, voterEmail, xml) SELECT ?, ?, ? WHERE NOT EXISTS" 133 + " (SELECT 1 FROM \"" + tableName + "\"" 134 + " WHERE serviceName = ? AND voterEmail = ?)" ); 135 database.statementCache().put( sKey, s ); 136 } 137 s.setString( 1, voterService.name() ); 138 s.setString( 2, voterEmail ); 139 s.setString( 3, xml ); 140 s.setString( 4, voterService.name() ); 141 s.setString( 5, voterEmail ); 142 s.executeUpdate(); 143 } 144 } 145 } 146 147 148 149}