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-rw-r--r--trunk/infrastructure/framework-src/modules/sqlbase/sqlobj.js505
1 files changed, 0 insertions, 505 deletions
diff --git a/trunk/infrastructure/framework-src/modules/sqlbase/sqlobj.js b/trunk/infrastructure/framework-src/modules/sqlbase/sqlobj.js
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--- a/trunk/infrastructure/framework-src/modules/sqlbase/sqlobj.js
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@@ -1,505 +0,0 @@
-/**
- * Copyright 2009 Google 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.
- */
-
-import("cache_utils.syncedWithCache");
-import("sqlbase.sqlcommon.*");
-import("jsutils.*");
-
-jimport("java.lang.System.out.println");
-jimport("java.sql.Statement");
-
-function _withCache(name, fn) {
- return syncedWithCache('sqlobj.'+name, fn);
-}
-
-function getIdColspec() {
- return ('INT NOT NULL '+autoIncrementClause()+' PRIMARY KEY');
-}
-
-function getLongtextColspec(extra) {
- var spec = getSqlBase().longTextType();
- if (extra) {
- spec = (spec + " " + extra);
- }
- return spec;
-}
-
-function getBoolColspec(extra) {
- var spec;
- if (isMysql()) {
- spec = 'TINYINT(1)';
- } else {
- spec = 'SMALLINT';
- }
- if (extra) {
- spec = (spec + " " + extra);
- }
- return spec;
-}
-
-function getDateColspec(extra) {
- var spec;
- if (isMysql()) {
- spec = 'DATETIME';
- } else {
- spec = 'TIMESTAMP';
- }
- if (extra) {
- spec = (spec + " " + extra);
- }
- return spec;
-}
-
-function _bq(x) { return btquote(x); }
-
-/*
- * for debugging queries
- */
-function _qdebug(q) {
- if (appjet.config.debugSQL) {
- println(q);
- }
-}
-
-/** executeFn is either "execute" or "executeUpdate" "executeQuery" */
-function _execute(stmnt, executeFn) {
- if (!executeFn) {
- executeFn = 'execute';
- }
- return withConnection(function(conn) {
- var pstmnt = conn.prepareStatement(stmnt);
- return closing(pstmnt, function() {
- _qdebug(stmnt);
- return pstmnt[executeFn]();
- });
- });
-}
-
-function _executeUpdate(stmnt) {
- return _execute(stmnt, 'executeUpdate');
-}
-
-function _executeQuery(stmnt) {
- return _execute(stmnt, 'executeQuery');
-}
-
-/*
- * Not all SQL/JS types supported.
- */
-function _getJsValFromResultSet(rs, type, colName) {
- var r;
- if (type == java.sql.Types.VARCHAR ||
- type == java.sql.Types.LONGVARCHAR ||
- type == java.sql.Types.CHAR) {
- r = String(rs.getString(colName));
- } else if (type == java.sql.Types.TIMESTAMP) {
- var t = rs.getTimestamp(colName);
- if (t) {
- r = new Date(t.getTime());
- } else {
- r = null;
- }
- } else if (type == java.sql.Types.INTEGER ||
- type == java.sql.Types.SMALLINT ||
- type == java.sql.Types.TINYINT) {
- r = rs.getInt(colName);
- } else if (type == java.sql.Types.BIT) {
- r = rs.getBoolean(colName);
- } else {
- throw Error("Cannot fetch sql type ID "+type+" (columnName = "+colName+")");
- }
-
- if (rs.wasNull()) {
- r = null;
- }
- return r;
-}
-
-function _lookupColumnType(tableName, columnName) {
- return withConnection(function(conn) {
- var metadata = conn.getMetaData();
- var rs = metadata.getColumns(null, null, tableName, columnName);
- if (!rs) {
- throw Error("Table '"+tableName+"' does not appear to have colum '"+columnName+"'.");
- }
- var rsmd = rs.getMetaData();
- var colCount = rsmd.getColumnCount();
-// rs.first();
- rs.next();
- var type = rs.getInt("DATA_TYPE");
- return type;
- });
-}
-
-/* cached, on misses calls _lookuParameterType */
-function _getParameterType(tableName, columnName) {
- var key = [tableName, columnName].join(".");
- return _withCache('column-types', function(cache) {
- if (!cache[key]) {
- cache[key] = _lookupColumnType(tableName, columnName);
- }
- return cache[key];
- });
-}
-
-/*
- * Not all SQL/JS types supported.
- */
-function _setPreparedValues(tableName, pstmnt, keyList, obj, indexOffset) {
- if (!indexOffset) { indexOffset = 0; }
-
- for (var i = 1; i <= keyList.length; i++) {
- var k = keyList[i-1];
- var v = obj[k];
- var j = i + indexOffset;
-
- if (v === undefined) {
- throw Error("value is undefined for key "+k);
- }
-
- if (v === null) {
- var type = _getParameterType(tableName, k);
- pstmnt.setNull(j, type);
- } else if (typeof(v) == 'string') {
- pstmnt.setString(j, v);
- } else if (typeof(v) == 'number') {
- pstmnt.setInt(j, v);
- } else if (typeof(v) == 'boolean') {
- pstmnt.setBoolean(j, v);
- } else if (v.valueOf && v.getDate && v.getHours) {
- pstmnt.setTimestamp(j, new java.sql.Timestamp(+v));
- } else {
- throw Error("Cannot insert this type of javascript object: "+typeof(v)+" (key="+k+", value = "+v+")");
- }
- }
-}
-
-function _resultRowToJsObj(resultSet) {
- var resultObj = {};
-
- var metaData = resultSet.getMetaData();
- var colCount = metaData.getColumnCount();
- for (var i = 1; i <= colCount; i++) {
- var colName = metaData.getColumnName(i);
- var type = metaData.getColumnType(i);
- resultObj[colName] = _getJsValFromResultSet(resultSet, type, colName);
- }
-
- return resultObj;
-}
-
-/*
- * Inserts the object into the given table, and returns auto-incremented ID if any.
- */
-function insert(tableName, obj) {
- var keyList = keys(obj);
-
- var stmnt = "INSERT INTO "+_bq(tableName)+" (";
- stmnt += keyList.map(function(k) { return _bq(k); }).join(', ');
- stmnt += ") VALUES (";
- stmnt += keyList.map(function(k) { return '?'; }).join(', ');
- stmnt += ")";
-
- return withConnection(function(conn) {
- var pstmnt = conn.prepareStatement(stmnt, Statement.RETURN_GENERATED_KEYS);
- return closing(pstmnt, function() {
- _setPreparedValues(tableName, pstmnt, keyList, obj, 0);
- _qdebug(stmnt);
- pstmnt.executeUpdate();
- var rs = pstmnt.getGeneratedKeys();
- if (rs != null) {
- return closing(rs, function() {
- if (rs.next()) {
- return rs.getInt(1);
- }
- });
- }
- });
- });
-};
-
-/*
- * Selects a single object given the constraintMap. If there are more
- * than 1 objects that match, it will return a single one of them
- * (unspecified which one). If no objects match, returns null.
- *
- * constraints is a javascript object of column names to values.
- * Currently only supports string equality of constraints.
- */
-function selectSingle(tableName, constraints) {
- var keyList = keys(constraints);
-
- var stmnt = "SELECT * FROM "+_bq(tableName)+" WHERE (";
- stmnt += keyList.map(function(k) { return '('+_bq(k)+' = '+'?)'; }).join(' AND ');
- stmnt += ')';
- if (isMysql()) {
- stmnt += ' LIMIT 1';
- }
-
- return withConnection(function(conn) {
- var pstmnt = conn.prepareStatement(stmnt);
- return closing(pstmnt, function() {
- _setPreparedValues(tableName, pstmnt, keyList, constraints, 0);
- _qdebug(stmnt);
- var resultSet = pstmnt.executeQuery();
- return closing(resultSet, function() {
- if (!resultSet.next()) {
- return null;
- }
- return _resultRowToJsObj(resultSet);
- });
- });
- });
-}
-
-function _makeConstraintString(key, value) {
- if (typeof(value) != 'object' || ! (value instanceof Array)) {
- return '('+_bq(key)+' = ?)';
- } else {
- var comparator = value[0];
- return '('+_bq(key)+' '+comparator+' ?)';
- }
-}
-
-function _preparedValuesConstraints(constraints) {
- var c = {};
- eachProperty(constraints, function(k, v) {
- c[k] = (typeof(v) != 'object' || ! (v instanceof Array) ? v : v[1]);
- });
- return c;
-}
-
-function selectMulti(tableName, constraints, options) {
- if (!options) {
- options = {};
- }
-
- var constraintKeys = keys(constraints);
-
- var stmnt = "SELECT * FROM "+_bq(tableName)+" ";
-
- if (constraintKeys.length > 0) {
- stmnt += "WHERE (";
- stmnt += constraintKeys.map(function(key) {
- return _makeConstraintString(key, constraints[key]);
- }).join(' AND ');
- stmnt += ')';
- }
-
- if (options.orderBy) {
- var orderEntries = [];
- options.orderBy.split(",").forEach(function(orderBy) {
- var asc = "ASC";
- if (orderBy.charAt(0) == '-') {
- orderBy = orderBy.substr(1);
- asc = "DESC";
- }
- orderEntries.push(_bq(orderBy)+" "+asc);
- });
- stmnt += " ORDER BY "+orderEntries.join(", ");
- }
-
- if (options.limit) {
- stmnt += " LIMIT "+options.limit;
- }
-
- return withConnection(function(conn) {
- var pstmnt = conn.prepareStatement(stmnt);
- return closing(pstmnt, function() {
- _setPreparedValues(
- tableName, pstmnt, constraintKeys,
- _preparedValuesConstraints(constraints), 0);
-
- _qdebug(stmnt);
- var resultSet = pstmnt.executeQuery();
- var resultArray = [];
-
- return closing(resultSet, function() {
- while (resultSet.next()) {
- resultArray.push(_resultRowToJsObj(resultSet));
- }
-
- return resultArray;
- });
- });
- });
-}
-
-/* returns number of rows updated */
-function update(tableName, constraints, obj) {
- var objKeys = keys(obj);
- var constraintKeys = keys(constraints);
-
- var stmnt = "UPDATE "+_bq(tableName)+" SET ";
- stmnt += objKeys.map(function(k) { return ''+_bq(k)+' = ?'; }).join(', ');
- stmnt += " WHERE (";
- stmnt += constraintKeys.map(function(k) { return '('+_bq(k)+' = ?)'; }).join(' AND ');
- stmnt += ')';
-
- return withConnection(function(conn) {
- var pstmnt = conn.prepareStatement(stmnt);
- return closing(pstmnt, function() {
- _setPreparedValues(tableName, pstmnt, objKeys, obj, 0);
- _setPreparedValues(tableName, pstmnt, constraintKeys, constraints, objKeys.length);
- _qdebug(stmnt);
- return pstmnt.executeUpdate();
- });
- });
-}
-
-function updateSingle(tableName, constraints, obj) {
- var count = update(tableName, constraints, obj);
- if (count != 1) {
- throw Error("save count != 1. instead, count = "+count);
- }
-}
-
-function deleteRows(tableName, constraints) {
- var constraintKeys = keys(constraints);
- var stmnt = "DELETE FROM "+_bq(tableName)+" WHERE (";
- stmnt += constraintKeys.map(function(k) { return '('+_bq(k)+' = ?)'; }).join(' AND ');
- stmnt += ')';
- withConnection(function(conn) {
- var pstmnt = conn.prepareStatement(stmnt);
- closing(pstmnt, function() {
- _setPreparedValues(tableName, pstmnt, constraintKeys, constraints);
- _qdebug(stmnt);
- pstmnt.executeUpdate();
- });
- })
-}
-
-//----------------------------------------------------------------
-// table management
-//----------------------------------------------------------------
-
-/*
- * Create a SQL table, specifying column names and types with a
- * javascript object.
- */
-function createTable(tableName, colspec, indices) {
- if (doesTableExist(tableName)) {
- return;
- }
-
- var stmnt = "CREATE TABLE "+_bq(tableName)+ " (";
- stmnt += keys(colspec).map(function(k) { return (_bq(k) + ' ' + colspec[k]); }).join(', ');
- if (indices) {
- stmnt += ', ' + keys(indices).map(function(k) { return 'INDEX (' + _bq(k) + ')'; }).join(', ');
- }
- stmnt += ')'+createTableOptions();
- _execute(stmnt);
-}
-
-function dropTable(tableName) {
- _execute("DROP TABLE "+_bq(tableName));
-}
-
-function dropAndCreateTable(tableName, colspec, indices) {
- if (doesTableExist(tableName)) {
- dropTable(tableName);
- }
-
- return createTable(tableName, colspec, indices);
-}
-
-function renameTable(oldName, newName) {
- _executeUpdate("RENAME TABLE "+_bq(oldName)+" TO "+_bq(newName));
-}
-
-function modifyColumn(tableName, columnName, newSpec) {
- _executeUpdate("ALTER TABLE "+_bq(tableName)+" MODIFY "+_bq(columnName)+" "+newSpec);
-}
-
-function alterColumn(tableName, columnName, alteration) {
- var q = "ALTER TABLE "+_bq(tableName)+" ALTER COLUMN "+_bq(columnName)+" "+alteration;
- _executeUpdate(q);
-}
-
-function changeColumn(tableName, columnName, newSpec) {
- var q = ("ALTER TABLE "+_bq(tableName)+" CHANGE COLUMN "+_bq(columnName)
- +" "+newSpec);
- _executeUpdate(q);
-}
-
-function addColumns(tableName, colspec) {
- inTransaction(function(conn) {
- eachProperty(colspec, function(name, definition) {
- var stmnt = "ALTER TABLE "+_bq(tableName)+" ADD COLUMN "+_bq(name)+" "+definition;
- _executeUpdate(stmnt);
- });
- });
-}
-
-function dropColumn(tableName, columnName) {
- var stmnt = "ALTER TABLE "+_bq(tableName)+" DROP COLUMN "+_bq(columnName);
- _executeUpdate(stmnt);
-}
-
-function listTables() {
- return withConnection(function(conn) {
- var metadata = conn.getMetaData();
- var resultSet = metadata.getTables(null, null, null, null);
- var resultArray = [];
-
- return closing(resultSet, function() {
- while (resultSet.next()) {
- resultArray.push(resultSet.getString("TABLE_NAME"));
- }
- return resultArray;
- });
- });
-}
-
-function setTableEngine(tableName, engineName) {
- var stmnt = "ALTER TABLE "+_bq(tableName)+" ENGINE="+_bq(engineName);
- _executeUpdate(stmnt);
-}
-
-function getTableEngine(tableName) {
- if (!isMysql()) {
- throw Error("getTableEngine() only supported by MySQL database type.");
- }
-
- var tableEngines = {};
-
- withConnection(function(conn) {
- var stmnt = "show table status";
- var pstmnt = conn.prepareStatement(stmnt);
- closing(pstmnt, function() {
- _qdebug(stmnt);
- var resultSet = pstmnt.executeQuery();
- closing(resultSet, function() {
- while (resultSet.next()) {
- var n = resultSet.getString("Name");
- var eng = resultSet.getString("Engine");
- tableEngines[n] = eng;
- }
- });
- });
- });
-
- return tableEngines[tableName];
-}
-
-function createIndex(tableName, columns) {
- var indexName = "idx_"+(columns.join("_"));
- var stmnt = "CREATE INDEX "+_bq(indexName)+" on "+_bq(tableName)+" (";
- stmnt += columns.map(_bq).join(", ");
- stmnt += ")";
- _executeUpdate(stmnt);
-}
-