mirror of
https://github.com/moodle/moodle.git
synced 2025-07-16 11:56:31 +02:00
f9543de627
the number of bits to use, and not the number of decimals. So, based on the number of decimals from the XMLDB schema, we are going to create REAL (<6 decimals) or DOUBLE PRECISION (>=6) columns.
258 lines
14 KiB
PHP
258 lines
14 KiB
PHP
<?php // $Id$
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// //
|
|
// NOTICE OF COPYRIGHT //
|
|
// //
|
|
// Moodle - Modular Object-Oriented Dynamic Learning Environment //
|
|
// http://moodle.com //
|
|
// //
|
|
// Copyright (C) 2001-3001 Martin Dougiamas http://dougiamas.com //
|
|
// (C) 2001-3001 Eloy Lafuente (stronk7) http://contiento.com //
|
|
// //
|
|
// This program is free software; you can redistribute it and/or modify //
|
|
// it under the terms of the GNU General Public License as published by //
|
|
// the Free Software Foundation; either version 2 of the License, or //
|
|
// (at your option) any later version. //
|
|
// //
|
|
// This program is distributed in the hope that it will be useful, //
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of //
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
|
|
// GNU General Public License for more details: //
|
|
// //
|
|
// http://www.gnu.org/copyleft/gpl.html //
|
|
// //
|
|
///////////////////////////////////////////////////////////////////////////
|
|
|
|
/// This class generate SQL code to be used against PostgreSQL
|
|
/// It extends XMLDBgenerator so everything can be
|
|
/// overriden as needed to generate correct SQL.
|
|
|
|
class XMLDBpostgres7 extends XMLDBgenerator {
|
|
|
|
/// Only set values that are different from the defaults present in XMLDBgenerator
|
|
|
|
var $number_type = 'NUMERIC'; // Proper type for NUMBER(x) in this DB
|
|
|
|
var $unsigned_allowed = false; // To define in the generator must handle unsigned information
|
|
var $default_for_char = ''; // To define the default to set for NOT NULLs CHARs without default (null=do nothing)
|
|
|
|
var $foreign_keys = false; // Does the generator build foreign keys
|
|
|
|
var $primary_index = false;// Does the generator need to build one index for primary keys
|
|
var $unique_index = false; // Does the generator need to build one index for unique keys
|
|
var $foreign_index = true; // Does the generator need to build one index for foreign keys
|
|
|
|
var $sequence_extra_code = false; //Does the generator need to add extra code to generate the sequence fields
|
|
var $sequence_name = 'BIGSERIAL'; //Particular name for inline sequences in this generator
|
|
var $sequence_only = true; //To avoid to output the rest of the field specs, leaving only the name and the sequence_name variable
|
|
|
|
var $enum_inline_code = false; //Does the generator need to add inline code in the column definition
|
|
|
|
/**
|
|
* Creates one new XMLDBpostgres7
|
|
*/
|
|
function XMLDBpostgres7() {
|
|
parent::XMLDBgenerator();
|
|
$this->prefix = '';
|
|
$this->reserved_words = $this->getReservedWords();
|
|
}
|
|
|
|
/**
|
|
* Given one XMLDB Type, lenght and decimals, returns the DB proper SQL type
|
|
*/
|
|
function getTypeSQL ($xmldb_type, $xmldb_length=null, $xmldb_decimals=null) {
|
|
|
|
switch ($xmldb_type) {
|
|
case XMLDB_TYPE_INTEGER: // From http://www.postgresql.org/docs/7.4/interactive/datatype.html
|
|
if (empty($xmldb_length)) {
|
|
$xmldb_length = 10;
|
|
}
|
|
if ($xmldb_length > 9) {
|
|
$dbtype = 'BIGINT';
|
|
} else if ($xmldb_length > 4) {
|
|
$dbtype = 'INTEGER';
|
|
} else {
|
|
$dbtype = 'SMALLINT';
|
|
}
|
|
break;
|
|
case XMLDB_TYPE_NUMBER:
|
|
$dbtype = $this->number_type;
|
|
if (!empty($xmldb_length)) {
|
|
$dbtype .= '(' . $xmldb_length;
|
|
if (!empty($xmldb_decimals)) {
|
|
$dbtype .= ',' . $xmldb_decimals;
|
|
}
|
|
$dbtype .= ')';
|
|
}
|
|
break;
|
|
case XMLDB_TYPE_FLOAT:
|
|
$dbtype = 'DOUBLE PRECISION';
|
|
if (!empty($xmldb_decimals)) {
|
|
if ($xmldb_decimals < 6) {
|
|
$dbtype = 'REAL';
|
|
}
|
|
}
|
|
break;
|
|
case XMLDB_TYPE_CHAR:
|
|
$dbtype = 'VARCHAR';
|
|
if (!empty($xmldb_length)) {
|
|
$xmldb_length='255';
|
|
}
|
|
$dbtype .= '(' . $xmldb_length . ')';
|
|
break;
|
|
case XMLDB_TYPE_TEXT:
|
|
$dbtype = 'TEXT';
|
|
break;
|
|
case XMLDB_TYPE_BINARY:
|
|
$dbtype = 'BYTEA';
|
|
break;
|
|
case XMLDB_TYPE_DATETIME:
|
|
$dbtype = 'TIMESTAMP';
|
|
break;
|
|
}
|
|
return $dbtype;
|
|
}
|
|
|
|
/**
|
|
* Returns the code needed to create one enum for the xmldb_table and xmldb_field passes
|
|
*/
|
|
function getEnumExtraSQL ($xmldb_table, $xmldb_field) {
|
|
|
|
$sql = 'CONSTRAINT ' . $this->getNameForObject($xmldb_table->getName(), $xmldb_field->getName(), 'ck');
|
|
$sql.= ' CHECK (' . $this->getEncQuoted($xmldb_field->getName()) . ' IN (' . implode(', ', $xmldb_field->getEnumValues()) . ')),';
|
|
|
|
return $sql;
|
|
}
|
|
|
|
/**
|
|
* Returns the code (in array) needed to add one comment to the table
|
|
*/
|
|
function getCommentSQL ($xmldb_table) {
|
|
|
|
$comment = "COMMENT ON TABLE " . $this->getEncQuoted($this->prefix . $xmldb_table->getName());
|
|
$comment.= " IS '" . substr($xmldb_table->getComment(), 0, 250) . "'";
|
|
|
|
return array($comment);
|
|
}
|
|
|
|
/**
|
|
* Returns an array of reserved words (lowercase) for this DB
|
|
*/
|
|
function getReservedWords() {
|
|
/// This file contains the reserved words for PostgreSQL databases
|
|
/// from http://www.postgresql.org/docs/7.3/static/sql-keywords-appendix.html
|
|
$reserved_words = array (
|
|
'abort', 'abs', 'absolute', 'access', 'action', 'ada',
|
|
'add', 'admin', 'after', 'aggregate', 'alias', 'all',
|
|
'allocate', 'alter', 'analyse', 'analyze', 'and', 'any',
|
|
'are', 'array', 'as', 'asc', 'asensitive', 'assertion',
|
|
'assignment', 'asymmetric', 'at', 'atomic',
|
|
'authorization', 'avg', 'backward', 'before', 'begin',
|
|
'between', 'bigint', 'binary', 'bit', 'bitvar',
|
|
'bit_length', 'blob', 'boolean', 'both', 'breadth', 'by',
|
|
'c', 'cache', 'call', 'called', 'cardinality', 'cascade',
|
|
'cascaded', 'case', 'cast', 'catalog', 'catalog_name',
|
|
'chain', 'char', 'character', 'characteristics',
|
|
'character_length', 'character_set_catalog',
|
|
'character_set_name', 'character_set_schema',
|
|
'char_length', 'check', 'checked', 'checkpoint', 'class',
|
|
'class_origin', 'clob', 'close', 'cluster', 'coalesce',
|
|
'cobol', 'collate', 'collation', 'collation_catalog',
|
|
'collation_name', 'collation_schema', 'column',
|
|
'column_name', 'command_function',
|
|
'command_function_code', 'comment', 'commit', 'committed',
|
|
'completion', 'condition_number', 'connect', 'connection',
|
|
'connection_name', 'constraint', 'constraints',
|
|
'constraint_catalog', 'constraint_name',
|
|
'constraint_schema', 'constructor', 'contains', 'continue',
|
|
'conversion', 'convert', 'copy', 'corresponding', 'count',
|
|
'create', 'createdb', 'createuser', 'cross', 'cube', 'current',
|
|
'current_date', 'current_path', 'current_role',
|
|
'current_time', 'current_timestamp', 'current_user',
|
|
'cursor', 'cursor_name', 'cycle', 'data', 'database', 'date',
|
|
'datetime_interval_code', 'datetime_interval_precision',
|
|
'day', 'deallocate', 'dec', 'decimal', 'declare', 'default',
|
|
'deferrable', 'deferred', 'defined', 'definer', 'delete',
|
|
'delimiter', 'delimiters', 'depth', 'deref', 'desc', 'describe',
|
|
'descriptor', 'destroy', 'destructor', 'deterministic',
|
|
'diagnostics', 'dictionary', 'disconnect', 'dispatch',
|
|
'distinct', 'do', 'domain', 'double', 'drop', 'dynamic',
|
|
'dynamic_function', 'dynamic_function_code', 'each', 'else',
|
|
'encoding', 'encrypted', 'end', 'end-exec', 'equals', 'escape',
|
|
'every', 'except', 'exception', 'exclusive', 'exec', 'execute',
|
|
'existing', 'exists', 'explain', 'external', 'extract', 'false',
|
|
'fetch', 'final', 'first', 'float', 'for', 'force', 'foreign',
|
|
'fortran', 'forward', 'found', 'free', 'freeze', 'from', 'full',
|
|
'function', 'g', 'general', 'generated', 'get', 'global', 'go',
|
|
'goto', 'grant', 'granted', 'group', 'grouping', 'handler',
|
|
'having', 'hierarchy', 'hold', 'host', 'hour', 'identity',
|
|
'ignore', 'ilike', 'immediate', 'immutable', 'implementation',
|
|
'implicit', 'in', 'increment', 'index', 'indicator', 'infix',
|
|
'inherits', 'initialize', 'initially', 'inner', 'inout',
|
|
'input', 'insensitive', 'insert', 'instance', 'instantiable',
|
|
'instead', 'int', 'integer', 'intersect', 'interval', 'into',
|
|
'invoker', 'is', 'isnull', 'isolation', 'iterate', 'join', 'k',
|
|
'key', 'key_member', 'key_type', 'lancompiler', 'language',
|
|
'large', 'last', 'lateral', 'leading', 'left', 'length', 'less',
|
|
'level', 'like', 'limit', 'listen', 'load', 'local', 'localtime',
|
|
'localtimestamp', 'location', 'locator', 'lock', 'lower', 'm',
|
|
'map', 'match', 'max', 'maxvalue', 'message_length',
|
|
'message_octet_length', 'message_text', 'method', 'min',
|
|
'minute', 'minvalue', 'mod', 'mode', 'modifies', 'modify',
|
|
'module', 'month', 'more', 'move', 'mumps', 'name', 'names',
|
|
'national', 'natural', 'nchar', 'nclob', 'new', 'next', 'no',
|
|
'nocreatedb', 'nocreateuser', 'none', 'not', 'nothing',
|
|
'notify', 'notnull', 'null', 'nullable', 'nullif', 'number',
|
|
'numeric', 'object', 'octet_length', 'of', 'off', 'offset', 'oids',
|
|
'old', 'on', 'only', 'open', 'operation', 'operator', 'option',
|
|
'options', 'or', 'order', 'ordinality', 'out', 'outer', 'output',
|
|
'overlaps', 'overlay', 'overriding', 'owner', 'pad',
|
|
'parameter', 'parameters', 'parameter_mode',
|
|
'parameter_name', 'parameter_ordinal_position',
|
|
'parameter_specific_catalog', 'parameter_specific_name',
|
|
'parameter_specific_schema', 'partial', 'pascal',
|
|
'password', 'path', 'pendant', 'placing', 'pli', 'position',
|
|
'postfix', 'precision', 'prefix', 'preorder', 'prepare',
|
|
'preserve', 'primary', 'prior', 'privileges', 'procedural',
|
|
'procedure', 'public', 'read', 'reads', 'real', 'recheck',
|
|
'recursive', 'ref', 'references', 'referencing', 'reindex',
|
|
'relative', 'rename', 'repeatable', 'replace', 'reset',
|
|
'restrict', 'result', 'return', 'returned_length',
|
|
'returned_octet_length', 'returned_sqlstate', 'returns',
|
|
'revoke', 'right', 'role', 'rollback', 'rollup', 'routine',
|
|
'routine_catalog', 'routine_name', 'routine_schema', 'row',
|
|
'rows', 'row_count', 'rule', 'savepoint', 'scale', 'schema',
|
|
'schema_name', 'scope', 'scroll', 'search', 'second', 'section',
|
|
'security', 'select', 'self', 'sensitive', 'sequence',
|
|
'serializable', 'server_name', 'session', 'session_user',
|
|
'set', 'setof', 'sets', 'share', 'show', 'similar', 'simple', 'size',
|
|
'smallint', 'some', 'source', 'space', 'specific',
|
|
'specifictype', 'specific_name', 'sql', 'sqlcode', 'sqlerror',
|
|
'sqlexception', 'sqlstate', 'sqlwarning', 'stable', 'start',
|
|
'state', 'statement', 'static', 'statistics', 'stdin', 'stdout',
|
|
'storage', 'strict', 'structure', 'style', 'subclass_origin',
|
|
'sublist', 'substring', 'sum', 'symmetric', 'sysid', 'system',
|
|
'system_user', 'table', 'table_name', 'temp', 'template',
|
|
'temporary', 'terminate', 'than', 'then', 'time', 'timestamp',
|
|
'timezone_hour', 'timezone_minute', 'to', 'toast', 'trailing',
|
|
'transaction', 'transactions_committed',
|
|
'transactions_rolled_back', 'transaction_active',
|
|
'transform', 'transforms', 'translate', 'translation',
|
|
'treat', 'trigger', 'trigger_catalog', 'trigger_name',
|
|
'trigger_schema', 'trim', 'true', 'truncate', 'trusted', 'type',
|
|
'uncommitted', 'under', 'unencrypted', 'union', 'unique',
|
|
'unknown', 'unlisten', 'unnamed', 'unnest', 'until', 'update',
|
|
'upper', 'usage', 'user', 'user_defined_type_catalog',
|
|
'user_defined_type_name', 'user_defined_type_schema',
|
|
'using', 'vacuum', 'valid', 'validator', 'value', 'values',
|
|
'varchar', 'variable', 'varying', 'verbose', 'version', 'view',
|
|
'volatile', 'when', 'whenever', 'where', 'with', 'without', 'work',
|
|
'write', 'year', 'zone'
|
|
);
|
|
return $reserved_words;
|
|
}
|
|
}
|
|
|
|
?>
|