Class SqliteCompiler
Responsible for compiling a Query object into its SQL representation for SQLite
Properties summary
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$_deleteParts protected
arrayThe list of query clauses to traverse for generating a DELETE statement
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$_insertParts protected
arrayThe list of query clauses to traverse for generating an INSERT statement
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$_orderedUnion protected
boolSQLite does not support ORDER BY in UNION queries.
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$_quotedSelectAliases protected
boolIndicate whether aliases in SELECT clause need to be always quoted.
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$_selectParts protected
arrayThe list of query clauses to traverse for generating a SELECT statement
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$_templates protected
arrayList of sprintf templates that will be used for compiling the SQL for this query. There are some clauses that can be built as just as the direct concatenation of the internal parts, those are listed here.
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$_updateParts protected
arrayThe list of query clauses to traverse for generating an UPDATE statement
Method Summary
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_buildFromPart() protected
Helper function used to build the string representation of a FROM clause, it constructs the tables list taking care of aliasing and converting expression objects to string.
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_buildInsertPart() protected
Builds the SQL fragment for INSERT INTO.
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_buildJoinPart() protected
Helper function used to build the string representation of multiple JOIN clauses, it constructs the joins list taking care of aliasing and converting expression objects to string in both the table to be joined and the conditions to be used.
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_buildModifierPart() protected
Builds the SQL modifier fragment
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_buildSelectPart() protected
Helper function used to build the string representation of a SELECT clause, it constructs the field list taking care of aliasing and converting expression objects to string. This function also constructs the DISTINCT clause for the query.
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_buildSetPart() protected
Helper function to generate SQL for SET expressions.
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_buildUnionPart() protected
Builds the SQL string for all the UNION clauses in this query, when dealing with query objects it will also transform them using their configured SQL dialect.
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_buildUpdatePart() protected
Builds the SQL fragment for UPDATE.
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_buildValuesPart() protected
Builds the SQL fragment for INSERT INTO.
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_sqlCompiler() protected
Returns a callable object that can be used to compile a SQL string representation of this query.
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_stringifyExpressions() protected
Helper function used to covert ExpressionInterface objects inside an array into their string representation.
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compile() public
Returns the SQL representation of the provided query after generating the placeholders for the bound values using the provided generator
Method Detail
_buildFromPart() protected ¶
_buildFromPart(array $parts, \Cake\Database\Query $query, \Cake\Database\ValueBinder $generator)
Helper function used to build the string representation of a FROM clause, it constructs the tables list taking care of aliasing and converting expression objects to string.
Parameters
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array$parts list of tables to be transformed to string
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\Cake\Database\Query$query The query that is being compiled
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\Cake\Database\ValueBinder$generator the placeholder generator to be used in expressions
Returns
string_buildInsertPart() protected ¶
_buildInsertPart(array $parts, \Cake\Database\Query $query, \Cake\Database\ValueBinder $generator)
Builds the SQL fragment for INSERT INTO.
Parameters
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array$parts The insert parts.
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\Cake\Database\Query$query The query that is being compiled
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\Cake\Database\ValueBinder$generator the placeholder generator to be used in expressions
Returns
stringSQL fragment.
_buildJoinPart() protected ¶
_buildJoinPart(array $parts, \Cake\Database\Query $query, \Cake\Database\ValueBinder $generator)
Helper function used to build the string representation of multiple JOIN clauses, it constructs the joins list taking care of aliasing and converting expression objects to string in both the table to be joined and the conditions to be used.
Parameters
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array$parts list of joins to be transformed to string
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\Cake\Database\Query$query The query that is being compiled
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\Cake\Database\ValueBinder$generator the placeholder generator to be used in expressions
Returns
string_buildModifierPart() protected ¶
_buildModifierPart(array $parts, \Cake\Database\Query $query, \Cake\Database\ValueBinder $generator)
Builds the SQL modifier fragment
Parameters
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array$parts The query modifier parts
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\Cake\Database\Query$query The query that is being compiled
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\Cake\Database\ValueBinder$generator the placeholder generator to be used in expressions
Returns
stringSQL fragment.
_buildSelectPart() protected ¶
_buildSelectPart(array $parts, \Cake\Database\Query $query, \Cake\Database\ValueBinder $generator)
Helper function used to build the string representation of a SELECT clause, it constructs the field list taking care of aliasing and converting expression objects to string. This function also constructs the DISTINCT clause for the query.
Parameters
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array$parts list of fields to be transformed to string
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\Cake\Database\Query$query The query that is being compiled
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\Cake\Database\ValueBinder$generator the placeholder generator to be used in expressions
Returns
string_buildSetPart() protected ¶
_buildSetPart(array $parts, \Cake\Database\Query $query, \Cake\Database\ValueBinder $generator)
Helper function to generate SQL for SET expressions.
Parameters
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array$parts List of keys & values to set.
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\Cake\Database\Query$query The query that is being compiled
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\Cake\Database\ValueBinder$generator the placeholder generator to be used in expressions
Returns
string_buildUnionPart() protected ¶
_buildUnionPart(array $parts, \Cake\Database\Query $query, \Cake\Database\ValueBinder $generator)
Builds the SQL string for all the UNION clauses in this query, when dealing with query objects it will also transform them using their configured SQL dialect.
Parameters
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array$parts list of queries to be operated with UNION
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\Cake\Database\Query$query The query that is being compiled
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\Cake\Database\ValueBinder$generator the placeholder generator to be used in expressions
Returns
string_buildUpdatePart() protected ¶
_buildUpdatePart(array $parts, \Cake\Database\Query $query, \Cake\Database\ValueBinder $generator)
Builds the SQL fragment for UPDATE.
Parameters
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array$parts The update parts.
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\Cake\Database\Query$query The query that is being compiled
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\Cake\Database\ValueBinder$generator the placeholder generator to be used in expressions
Returns
stringSQL fragment.
_buildValuesPart() protected ¶
_buildValuesPart(array $parts, \Cake\Database\Query $query, \Cake\Database\ValueBinder $generator)
Builds the SQL fragment for INSERT INTO.
Parameters
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array$parts The values parts.
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\Cake\Database\Query$query The query that is being compiled
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\Cake\Database\ValueBinder$generator the placeholder generator to be used in expressions
Returns
stringSQL fragment.
_sqlCompiler() protected ¶
_sqlCompiler(string $sql, \Cake\Database\Query $query, \Cake\Database\ValueBinder $generator)
Returns a callable object that can be used to compile a SQL string representation of this query.
Parameters
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string$sql initial sql string to append to
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\Cake\Database\Query$query The query that is being compiled
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\Cake\Database\ValueBinder$generator The placeholder and value binder object
Returns
\Closure_stringifyExpressions() protected ¶
_stringifyExpressions(array $expressions, \Cake\Database\ValueBinder $generator, bool $wrap)
Helper function used to covert ExpressionInterface objects inside an array into their string representation.
Parameters
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array$expressions list of strings and ExpressionInterface objects
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\Cake\Database\ValueBinder$generator the placeholder generator to be used in expressions
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bool$wrap optional Whether to wrap each expression object with parenthesis
Returns
arraycompile() public ¶
compile(\Cake\Database\Query $query, \Cake\Database\ValueBinder $generator)
Returns the SQL representation of the provided query after generating the placeholders for the bound values using the provided generator
Parameters
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\Cake\Database\Query$query The query that is being compiled
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\Cake\Database\ValueBinder$generator the placeholder generator to be used in expressions
Returns
stringProperty Detail
$_deleteParts ¶ protected
The list of query clauses to traverse for generating a DELETE statement
Type
array$_insertParts ¶ protected
The list of query clauses to traverse for generating an INSERT statement
Type
array$_quotedSelectAliases ¶ protected
Indicate whether aliases in SELECT clause need to be always quoted.
Type
bool$_selectParts ¶ protected
The list of query clauses to traverse for generating a SELECT statement
Type
array$_templates ¶ protected
List of sprintf templates that will be used for compiling the SQL for this query. There are some clauses that can be built as just as the direct concatenation of the internal parts, those are listed here.
Type
array$_updateParts ¶ protected
The list of query clauses to traverse for generating an UPDATE statement
Type
array