ConnectionMethods
Provides extension methods for java.sql.Connection
.
import scala.language.implicitConversions
import little.sql.{ *, given }
val connector = Connector("jdbc:h2:~/test", "sa", "s3cr3t", "org.h2.Driver")
connector.withConnection { conn =>
val statements = Seq(
"drop table prog_lang if exists",
"create table prog_lang (id int, name text)",
"insert into prog_lang (id, name) values (1, 'basic'), (2, 'pascal'), (3, 'c')",
"select * from prog_lang"
)
statements.foreach { sql =>
// Execute SQL and handle execution result accordingly
conn.execute(sql) {
// If update is executed print update count
case Update(count) => println(s"Update Count: $count")
// If query is executed print values of each row in result set
case Query(resultSet) =>
while (resultSet.next())
printf("id: %d, name: %s%n", resultSet.getInt("id"), resultSet.getString("name"))
}
}
}
Attributes
- Graph
-
- Supertypes
-
class AnyValtrait Matchableclass Any
Members list
Value members
Concrete methods
Executes batch of generated statements and returns results.
Executes batch of generated statements and returns results.
Value parameters
- generator
-
SQL generator
Attributes
Executes batch of statements with generated parameter values and returns results.
Executes batch of statements with generated parameter values and returns results.
The generator must return sequence of parameter values that satisfy the supplied SQL.
Value parameters
- generator
-
parameter value generator
- sql
-
SQL from which prepared statement is created
Attributes
Executes SQL and passes result to supplied function.
Executes SQL and passes result to supplied function.
Value parameters
- f
-
function
- fetchSize
-
number of result set rows to fetch on each retrieval from database
- maxRows
-
maximum number of rows to return in result set
- params
-
parameters
- queryTimeout
-
maximum number of seconds to wait for execution
- sql
-
SQL
Attributes
Executes update and returns update count.
Executes update and returns update count.
Value parameters
- params
-
parameters
- queryTimeout
-
maximum number of seconds to wait for execution
- sql
-
SQL update
Attributes
Executes query and maps first row of result set using supplied function.
Executes query and maps first row of result set using supplied function.
If the result set is not empty, and if the supplied function's return value is not null, then Some
value is returned; otherwise, None
is returned.
Value parameters
- f
-
function
- params
-
parameters
- queryTimeout
-
maximum number of seconds to wait for execution
- sql
-
SQL query
Attributes
- Returns
-
value from supplied function
Executes query and builds a collection using the elements mapped from each row of result set.
Executes query and builds a collection using the elements mapped from each row of result set.
Value parameters
- f
-
map function
- fetchSize
-
number of result set rows to fetch on each retrieval from database
- maxRows
-
maximum number of rows to return in result set
- params
-
parameters
- queryTimeout
-
maximum number of seconds to wait for execution
- sql
-
SQL query
Attributes
Executes query and invokes supplied function for each row of result set.
Executes query and invokes supplied function for each row of result set.
Value parameters
- f
-
function
- fetchSize
-
number of result set rows to fetch on each retrieval from database
- maxRows
-
maximum number of rows to return in result set
- params
-
parameters
- queryTimeout
-
maximum number of seconds to wait for execution
- sql
-
SQL query
Attributes
Executes query and maps each row of result set using supplied function.
Executes query and maps each row of result set using supplied function.
Value parameters
- f
-
map function
- fetchSize
-
number of result set rows to fetch on each retrieval from database
- maxRows
-
maximum number of rows to return in result set
- params
-
parameters
- queryTimeout
-
maximum number of seconds to wait for execution
- sql
-
SQL query
Attributes
Executes query and passes result set to supplied function.
Executes query and passes result set to supplied function.
Value parameters
- f
-
function
- fetchSize
-
number of result set rows to fetch on each retrieval from database
- maxRows
-
maximum number of rows to return in result set
- params
-
parameters
- queryTimeout
-
maximum number of seconds to wait for execution
- sql
-
SQL query
Attributes
Executes update and passes update count to supplied function.
Executes update and passes update count to supplied function.
Value parameters
- f
-
function
- params
-
parameters
- queryTimeout
-
maximum number of seconds to wait for execution
- sql
-
SQL update
Attributes
Creates PreparedStatement and passes it to supplied function. Statement is closed on function's return.
Creates PreparedStatement and passes it to supplied function. Statement is closed on function's return.
Value parameters
- f
-
function
- sql
-
SQL statement
Attributes
- Returns
-
value from supplied function
Creates Statement and passes it to supplied function. Statement is closed on function's return.
Creates Statement and passes it to supplied function. Statement is closed on function's return.
Value parameters
- f
-
function
Attributes
- Returns
-
value from supplied function