class.ilDBPdoPostgresFieldDefinition.php

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<?php
require_once('class.ilDBPdoFieldDefinition.php');
 
class ilDBPdoPostgresFieldDefinition extends ilDBPdoFieldDefinition
{
 
        protected $options = array(
                'default_text_field_length' => 4096,
                'decimal_places' => 2,
        );
 
        public function getTypeDeclaration($field)
        {
                $db = $this->getDBInstance();
 
                switch ($field['type'])
                {
                        case 'text':
                                $length = !empty($field['length']) ? $field['length'] : $this->options['default_text_field_length'];
                                $fixed = !empty($field['fixed']) ? $field['fixed'] : false;
                                $fixed = false; // FSX we do not want to have fixed lengths
 
                                return $fixed ? ($length ? 'CHAR(' . $length . ')' : 'CHAR(' . $this->options['default_text_field_length']
                                                                                     . ')') : ($length ? 'VARCHAR(' . $length . ')' : 'TEXT');
                        case 'clob':
                                return 'TEXT';
                        case 'blob':
                                return 'BYTEA';
                        case 'integer':
                                if (!empty($field['autoincrement']))
                                {
                                        if (!empty($field['length']))
                                        {
                                                $length = $field['length'];
                                                if ($length > 4)
                                                {
                                                        return 'BIGSERIAL PRIMARY KEY';
                                                }
                                        }
 
                                        return 'SERIAL PRIMARY KEY';
                                }
                                if (!empty($field['length']))
                                {
                                        $length = $field['length'];
                                        if ($length <= 2)
                                        {
                                                return 'SMALLINT';
                                        } elseif ($length == 3 || $length == 4)
                                        {
                                                return 'INT';
                                        } elseif ($length > 4)
                                        {
                                                return 'BIGINT';
                                        }
                                }
 
                                return 'INT';
                        case 'boolean':
                                return 'BOOLEAN';
                        case 'date':
                                return 'DATE';
                        case 'time':
                                return 'TIME without time zone';
                        case 'timestamp':
                                return 'TIMESTAMP without time zone';
                        case 'float':
                                return 'FLOAT8';
                        case 'decimal':
                                $length = !empty($field['length']) ? $field['length'] : 18;
                                $scale = !empty($field['scale']) ? $field['scale'] : $this->options['decimal_places'];
 
                                return 'NUMERIC(' . $length . ',' . $scale . ')';
                }
        }
 
 
        protected function getIntegerDeclaration($name, $field)
        {
                $db = $this->getDBInstance();
 
                if (!empty($field['unsigned']))
                {
                        $db->warnings[] = "unsigned integer field \"$name\" is being declared as signed integer";
                }
                if (!empty($field['autoincrement']))
                {
                        $name = $db->quoteIdentifier($name, true);
 
                        return $name . ' ' . $this->getTypeDeclaration($field);
                }
                $default = '';
                if (array_key_exists('default', $field))
                {
                        if ($field['default'] === '')
                        {
                                $field['default'] = empty($field['notnull']) ? null : 0;
                        }
                        $default = ' DEFAULT ' . $this->quote($field['default'], 'integer');
                } elseif (empty($field['notnull']))
                {
                        $default = ' DEFAULT NULL';
                }
 
                $notnull = empty($field['notnull']) ? '' : ' NOT NULL';
                $name = $db->quoteIdentifier($name, true);
 
                return $name . ' ' . $this->getTypeDeclaration($field) . $default . $notnull;
        }
 
 
        protected function mapNativeDatatypeInternal($field)
        {
                $db_type = strtolower($field['type']);
                $length = $field['length'];
                $type = array();
                $unsigned = $fixed = null;
                switch ($db_type)
                {
                        case 'smallint':
                        case 'int2':
                                $type[] = 'integer';
                                $unsigned = false;
                                $length = 2;
                                if ($length == '2')
                                {
                                        $type[] = 'boolean';
                                        if (preg_match('/^(is|has)/', $field['name']))
                                        {
                                                $type = array_reverse($type);
                                        }
                                }
                                break;
                        case 'int':
                        case 'int4':
                        case 'integer':
                        case 'serial':
                        case 'serial4':
                                $type[] = 'integer';
                                $unsigned = false;
                                $length = 4;
                                break;
                        case 'bigint':
                        case 'int8':
                        case 'bigserial':
                        case 'serial8':
                                $type[] = 'integer';
                                $unsigned = false;
                                $length = 8;
                                break;
                        case 'bool':
                        case 'boolean':
                                $type[] = 'boolean';
                                $length = null;
                                break;
                        case 'text':
                        case 'varchar':
                                $fixed = false;
                        case 'unknown':
                        case 'char':
                        case 'bpchar':
                                $type[] = 'text';
                                if ($length == '1')
                                {
                                        $type[] = 'boolean';
                                        if (preg_match('/^(is|has)/', $field['name']))
                                        {
                                                $type = array_reverse($type);
                                        }
                                } elseif (strstr($db_type, 'text'))
                                {
                                        $type[] = 'clob';
                                }
                                if ($fixed !== false)
                                {
                                        $fixed = true;
                                }
                                break;
                        case 'date':
                                $type[] = 'date';
                                $length = null;
                                break;
                        case 'datetime':
                        case 'timestamp':
                                $type[] = 'timestamp';
                                $length = null;
                                break;
                        case 'time':
                                $type[] = 'time';
                                $length = null;
                                break;
                        case 'float':
                        case 'float8':
                        case 'double':
                        case 'real':
                                $type[] = 'float';
                                break;
                        case 'decimal':
                        case 'money':
                        case 'numeric':
                                $type[] = 'decimal';
                                if ($field['scale'])
                                {
                                        $length = $length . ',' . $field['scale'];
                                }
                                break;
                        case 'tinyblob':
                        case 'mediumblob':
                        case 'longblob':
                        case 'blob':
                        case 'bytea':
                                $type[] = 'blob';
                                $length = null;
                                break;
                        case 'oid':
                                $type[] = 'blob';
                                $type[] = 'clob';
                                $length = null;
                                break;
                        case 'year':
                                $type[] = 'integer';
                                $type[] = 'date';
                                $length = null;
                                break;
                        default:
                                throw new ilDatabaseException('unknown database attribute type: ' . $db_type);
                }
 
                if ((int)$length <= 0)
                {
                        $length = null;
                }
 
                return array( $type, $length, $unsigned, $fixed );
        }
}