ILIAS  release_5-2 Revision v5.2.25-18-g3f80b828510
Public Member Functions
ilPostgresQueryUtils Class Reference

Class ilPostgresQueryUtils. More...

+ Inheritance diagram for ilPostgresQueryUtils:
+ Collaboration diagram for ilPostgresQueryUtils:

Public Member Functions

 createTable ($name, $fields, $options=array())
 
 in ($field, $values, $negate=false, $type="")
 
 quote ($value, $type=null)
 
 concat (array $values, $allow_null=true)
 
 locate ($a_needle, $a_string, $a_start_pos=1)
 
 free (ilPDOStatement $statement)
 
 quoteIdentifier ($identifier)
 
 like ($column, $type, $value="?", $case_insensitive=true)
 
 now ()
 
 lock (array $tables)
 
 unlock ()
 
 createDatabase ($a_name, $a_charset="utf8", $a_collation="")
 
 groupConcat ($a_field_name, $a_seperator=",", $a_order=NULL)
 
 cast ($a_field_name, $a_dest_type)
 
Parameters
string$a_field_name
mixed$a_dest_type
Returns
string
More...
 
- Public Member Functions inherited from ilQueryUtils
 __construct (ilDBInterface $ilDBInterface)
 ilMySQLQueryUtils constructor. More...
 
 in ($field, $values, $negate=false, $type="")
 
 quote ($value, $type=null)
 
 concat (array $values, $allow_null=true)
 
 locate ($a_needle, $a_string, $a_start_pos=1)
 
 free (ilPDOStatement $statement)
 
 quoteIdentifier ($identifier)
 
 createTable ($name, $fields, $options=array())
 
 like ($column, $type, $value="?", $case_insensitive=true)
 
 now ()
 
 lock (array $tables)
 
 unlock ()
 
 createDatabase ($a_name, $a_charset="utf8", $a_collation="")
 
 groupConcat ($a_field_name, $a_seperator=",", $a_order=NULL)
 
Parameters
string$a_field_name
string$a_seperator
string$a_order
Returns
string
More...
 
 cast ($a_field_name, $a_dest_type)
 
Parameters
string$a_field_name
mixed$a_dest_type
Returns
string
More...
 

Additional Inherited Members

- Protected Attributes inherited from ilQueryUtils
 $db_instance
 

Detailed Description

Class ilPostgresQueryUtils.

Author
Fabian Schmid fs@st.nosp@m.uder.nosp@m.-raim.nosp@m.ann..nosp@m.ch

Definition at line 9 of file class.ilPostgresQueryUtils.php.

Member Function Documentation

◆ cast()

ilPostgresQueryUtils::cast (   $a_field_name,
  $a_dest_type 
)

Parameters
string$a_field_name
mixed$a_dest_type
Returns
string

Implements ilQueryUtilsInterface.

Definition at line 314 of file class.ilPostgresQueryUtils.php.

References array.

314  {
315  return "CAST({$a_field_name} AS " . $this->db_instance->getFieldDefinition()->getTypeDeclaration(array("type" => $a_dest_type)) . ")";
316  }
array
Create styles array
The data for the language used.
Definition: 40duplicateStyle.php:19

◆ concat()

ilPostgresQueryUtils::concat ( array  $values,
  $allow_null = true 
)
Parameters
array$values
bool$allow_null
Returns
string

Implements ilQueryUtilsInterface.

Definition at line 114 of file class.ilPostgresQueryUtils.php.

114  {
115  if (!count($values)) {
116  return ' ';
117  }
118 
119  $concat = ' CONCAT(';
120  $first = true;
121  foreach ($values as $field_info) {
122  $val = $field_info[0];
123 
124  if (!$first) {
125  $concat .= ',';
126  }
127 
128  if ($allow_null) {
129  $concat .= 'COALESCE(';
130  }
131  $concat .= $val;
132 
133  if ($allow_null) {
134  $concat .= ",''";
135  $concat .= ')';
136  }
137 
138  $first = false;
139  }
140  $concat .= ') ';
141 
142  return $concat;
143  }

◆ createDatabase()

ilPostgresQueryUtils::createDatabase (   $a_name,
  $a_charset = "utf8",
  $a_collation = "" 
)
Parameters
$a_name
string$a_charset
string$a_collation
Returns
mixed

Implements ilQueryUtilsInterface.

Definition at line 282 of file class.ilPostgresQueryUtils.php.

282  {
283  if ($a_collation != "") {
284  $sql = "CREATE DATABASE " . $a_name . " CHARACTER SET " . $a_charset . " COLLATE " . $a_collation;
285  } else {
286  $sql = "CREATE DATABASE " . $a_name . " CHARACTER SET " . $a_charset;
287  }
288 
289  return $sql;
290  }

◆ createTable()

ilPostgresQueryUtils::createTable (   $name,
  $fields,
  $options = array() 
)
Parameters
$name
$fields
array$options
Returns
string
Exceptions

Implements ilQueryUtilsInterface.

Definition at line 18 of file class.ilPostgresQueryUtils.php.

References $options, $query, array, and quote().

18  {
19  if (!$name) {
20  throw new ilDatabaseException('no valid table name specified');
21  }
22  if (empty($fields)) {
23  throw new ilDatabaseException('no fields specified for table "' . $name . '"');
24  }
25  $query_fields_array = array();
26  foreach ($fields as $field_name => $field) {
27  $query_fields_array[] = $this->db_instance->getFieldDefinition()->getDeclaration($field['type'], $field_name, $field);
28  }
29 
30  $query_fields = implode(', ', $query_fields_array);
31 
32  if (!empty($options['primary'])) {
33  $query_fields .= ', PRIMARY KEY (' . implode(', ', array_keys($options['primary'])) . ')';
34  }
35 
36  $query = "CREATE TABLE $name ($query_fields)";
37 
38  $options_strings = array();
39 
40  if (!empty($options['comment'])) {
41  $options_strings['comment'] = 'COMMENT = ' . $this->quote($options['comment'], 'text');
42  }
43 
44  if (!empty($options['charset'])) {
45  $options_strings['charset'] = 'DEFAULT CHARACTER SET ' . $options['charset'];
46  if (!empty($options['collate'])) {
47  $options_strings['charset'] .= ' COLLATE ' . $options['collate'];
48  }
49  }
50 
51  $type = false;
52  if (!empty($options['type'])) {
53  $type = $options['type'];
54  }
55  if ($type) {
56  $options_strings[] = "ENGINE = $type";
57  }
58 
59  if (!empty($options_strings)) {
60  $query .= ' ' . implode(' ', $options_strings);
61  }
62 
63  return $query;
64  }
ilDatabaseException
Class ilDatabaseException.
Definition: exception.ilDatabaseException.php:11
$options
if(!is_array($argv)) $options
Definition: tcpdf_addfont.php:137
array
Create styles array
The data for the language used.
Definition: 40duplicateStyle.php:19
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◆ free()

ilPostgresQueryUtils::free ( ilPDOStatement  $statement)
Parameters
\ilPDOStatement$statement
Returns
bool

Implements ilQueryUtilsInterface.

Definition at line 169 of file class.ilPostgresQueryUtils.php.

References ilPDOStatement\closeCursor().

169  {
170  $statement->closeCursor();
171 
172  return true;
173  }
ilPDOStatement\closeCursor
closeCursor()
Pdo allows for a manual closing of the cursor.
Definition: class.ilPDOStatement.php:55
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◆ groupConcat()

ilPostgresQueryUtils::groupConcat (   $a_field_name,
  $a_seperator = ",",
  $a_order = NULL 
)
Parameters
string$a_field_name
string$a_seperator
string$a_order
Returns
string

Implements ilQueryUtilsInterface.

Definition at line 300 of file class.ilPostgresQueryUtils.php.

References quote().

300  {
301  if ($a_order === NULL) {
302  $sql = "STRING_AGG(" . $a_field_name . ", " . $this->quote($a_seperator, "text") . ")";
303  } else {
304  $sql = "STRING_AGG(" . $a_field_name . ", " . $this->quote($a_seperator, "text") . " ORDER BY " . $a_order . ")";
305 
306  }
307  return $sql;
308  }
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◆ in()

ilPostgresQueryUtils::in (   $field,
  $values,
  $negate = false,
  $type = "" 
)
Parameters
string$field
string[]$values
bool$negate
string$type
Returns
string

Implements ilQueryUtilsInterface.

Definition at line 74 of file class.ilPostgresQueryUtils.php.

References quote().

74  {
75  if (count($values) == 0) {
76  // BEGIN fixed mantis #0014191:
77  //return " 1=2 "; // return a false statement on empty array
78  return $negate ? ' 1=1 ' : ' 1=2 ';
79  // END fixed mantis #0014191:
80  }
81  if ($type == "") // untyped: used ? for prepare/execute
82  {
83  $str = $field . (($negate) ? " NOT" : "") . " IN (?" . str_repeat(",?", count($values) - 1) . ")";
84  } else // typed, use values for query/manipulate
85  {
86  $str = $field . (($negate) ? " NOT" : "") . " IN (";
87  $sep = "";
88  foreach ($values as $v) {
89  $str .= $sep . $this->quote($v, $type);
90  $sep = ",";
91  }
92  $str .= ")";
93  }
94 
95  return $str;
96  }
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◆ like()

ilPostgresQueryUtils::like (   $column,
  $type,
  $value = "?",
  $case_insensitive = true 
)
Parameters
$column
$type
string$value
bool$case_insensitive
Returns
string
Exceptions

Implements ilQueryUtilsInterface.

Definition at line 193 of file class.ilPostgresQueryUtils.php.

References $column, array, quote(), ilDBConstants\T_CLOB, and ilDBConstants\T_TEXT.

193  {
194  if (!in_array($type, array(
195  ilDBConstants::T_TEXT,
196  ilDBConstants::T_CLOB,
197  "blob",
198  ))
199  ) {
200  throw new ilDatabaseException("Like: Invalid column type '" . $type . "'.");
201  }
202  if ($value == "?") {
203  if ($case_insensitive) {
204  return "UPPER(" . $column . ") LIKE(UPPER(?))";
205  } else {
206  return $column . " LIKE(?)";
207  }
208  } else {
209  if ($case_insensitive) {
210  // Always quote as text
211  return " UPPER(" . $column . ") LIKE(UPPER(" . $this->quote($value, 'text') . "))";
212  } else {
213  // Always quote as text
214  return " " . $column . " LIKE(" . $this->quote($value, 'text') . ")";
215  }
216  }
217  }
ilDatabaseException
Class ilDatabaseException.
Definition: exception.ilDatabaseException.php:11
$column
$column
Definition: 39dropdown.php:62
array
Create styles array
The data for the language used.
Definition: 40duplicateStyle.php:19
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◆ locate()

ilPostgresQueryUtils::locate (   $a_needle,
  $a_string,
  $a_start_pos = 1 
)
Parameters
$a_needle
$a_string
int$a_start_pos
Returns
string

Implements ilQueryUtilsInterface.

Definition at line 152 of file class.ilPostgresQueryUtils.php.

152  {
153  $locate = ' LOCATE( ';
154  $locate .= $a_needle;
155  $locate .= ',';
156  $locate .= $a_string;
157  $locate .= ',';
158  $locate .= $a_start_pos;
159  $locate .= ') ';
160 
161  return $locate;
162  }

◆ lock()

ilPostgresQueryUtils::lock ( array  $tables)
Parameters
array$tables
Returns
string

Implements ilQueryUtilsInterface.

Definition at line 232 of file class.ilPostgresQueryUtils.php.

References $counter, ilDBConstants\LOCK_READ, and ilDBConstants\LOCK_WRITE.

232  {
233  $lock = 'LOCK TABLES ';
234 
235  $counter = 0;
236  foreach ($tables as $table) {
237  if ($counter ++) {
238  $lock .= ', ';
239  }
240 
241  if (isset($table['sequence']) && $table['sequence']) {
242  $table_name = $this->db_instance->getSequenceName($table['name']);
243  } else {
244  $table_name = $table['name'];
245  }
246 
247  $lock .= ($table_name . ' ');
248 
249  if ($table['alias']) {
250  $lock .= ($table['alias'] . ' ');
251  }
252 
253  switch ($table['type']) {
254  case ilDBConstants::LOCK_READ:
255  $lock .= ' READ ';
256  break;
257 
258  case ilDBConstants::LOCK_WRITE:
259  $lock .= ' WRITE ';
260  break;
261  }
262  }
263 
264  return $lock;
265  }
$counter
$counter
Definition: config-scanner.php:59

◆ now()

ilPostgresQueryUtils::now ( )
Returns
string

Implements ilQueryUtilsInterface.

Definition at line 223 of file class.ilPostgresQueryUtils.php.

223  {
224  return "now()";
225  }

◆ quote()

ilPostgresQueryUtils::quote (   $value,
  $type = null 
)
Parameters
mixed$value
null$type
Returns
string

Implements ilQueryUtilsInterface.

Definition at line 104 of file class.ilPostgresQueryUtils.php.

Referenced by createTable(), groupConcat(), in(), and like().

104  {
105  return $this->db_instance->quote($value, $type);
106  }
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◆ quoteIdentifier()

ilPostgresQueryUtils::quoteIdentifier (   $identifier)
Parameters
$identifier
Returns
string

Implements ilQueryUtilsInterface.

Definition at line 180 of file class.ilPostgresQueryUtils.php.

180  {
181  return $this->db_instance->quoteIdentifier($identifier);
182  }

◆ unlock()

ilPostgresQueryUtils::unlock ( )
Returns
string

Implements ilQueryUtilsInterface.

Definition at line 271 of file class.ilPostgresQueryUtils.php.

271  {
272  return 'UNLOCK TABLES';
273  }
The documentation for this class was generated from the following file: