パッケージ org.nkjmlab.sorm4j

インタフェース OrmReader

既知の実装クラスのリスト:

OrmConnection, OrmMapper, OrmTransaction

public interface OrmReader

The main interface of Reading functions of ORM reader. This interface based on Persist.java

作成者:

nkjm

メソッドの概要

修飾子とタイプ	メソッド	説明
<T> List<T>	readAll(Class<T> objectClass)
<T> ReadResultSet<T>	readAllLazy(Class<T> objectClass)
<T> T	readByPrimaryKey(Class<T> objectClass, Object... primaryKeyValues)	Reads an object from the database by its primary keys.
<T> T	readFirst(Class<T> objectClass, String sql, Object... parameters)
<T> ReadResultSet<T>	readLazy(Class<T> objectClass, String sql, Object... parameters)	Returns an ReadResultSet and convert it to Stream, List, and so on.
<T> List<T>	readList(Class<T> objectClass, String sql, Object... parameters)	Reads a list of objects from the database by mapping the results of the parameterized SQL query into instances of the given object class.
Map<String,Object>	readMapFirst(String sql, Object... parameters)	Reads a first row from the database by mapping the results of the SQL query into an instance of Map.
ReadResultSet<Map<String,Object>>	readMapLazy(String sql, Object... parameters)	Returns an ReadResultSet instance containing data from the execution of the provided parametrized SQL and convert it to Stream, List, and so on.
List<Map<String,Object>>	readMapList(String sql, Object... parameters)	Reads a list of objects from the database by mapping the SQL execution results to instances of Map containing data from the execution of the provided parametrized SQL and

メソッドの詳細

readAll

<T> List<T> readAll(Class<T> objectClass)

readAllLazy

<T> ReadResultSet<T> readAllLazy(Class<T> objectClass)

readByPrimaryKey

<T> T readByPrimaryKey(Class<T> objectClass,
                       Object... primaryKeyValues)

Reads an object from the database by its primary keys.

readFirst

<T> T readFirst(Class<T> objectClass,
                String sql,
                Object... parameters)

readLazy

<T> ReadResultSet<T> readLazy(Class<T> objectClass,
                              String sql,
                              Object... parameters)

Returns an ReadResultSet and convert it to Stream, List, and so on.

Parameters will be set according with the correspondence defined in JavaToSqlDataConverter#setParameters(PreparedStatement, int[], Object[])

導入されたバージョン:

1.0

readList

<T> List<T> readList(Class<T> objectClass,
                     String sql,
                     Object... parameters)

Reads a list of objects from the database by mapping the results of the parameterized SQL query into instances of the given object class. Only the columns returned from the SQL query will be set into the object instance.

Parameters will be set according with the correspondence defined in JavaToSqlDataConverter#setParameters(PreparedStatement, int[], Object[])

readMapFirst

Map<String,Object> readMapFirst(String sql,
                                      Object... parameters)

Reads a first row from the database by mapping the results of the SQL query into an instance of Map.

Types returned from the database will be converted to Java types in the map according with the correspondence defined in SqlToJavaDataConverter.getValueBySqlType(ResultSet, int, int).

Parameters will be set according with the correspondence defined in JavaToSqlDataConverter#setParameters(PreparedStatement, int[], Object[])

導入されたバージョン:

1.0

readMapLazy

ReadResultSet<Map<String,Object>> readMapLazy(String sql,
                                                    Object... parameters)

Returns an ReadResultSet instance containing data from the execution of the provided parametrized SQL and convert it to Stream, List, and so on.

Types returned from the database will be converted to Java types in the map according with the correspondence defined in SqlToJavaDataConverter.getValueBySqlType(ResultSet, int, int).

Parameters will be set according with the correspondence defined in JavaToSqlDataConverter#setParameters(PreparedStatement, int[], Object[])

導入されたバージョン:

1.0

readMapList

List<Map<String,Object>> readMapList(String sql,
                                           Object... parameters)

Reads a list of objects from the database by mapping the SQL execution results to instances of Map containing data from the execution of the provided parametrized SQL and

Types returned from the database will be converted to Java types in the map according with the correspondence defined in SqlToJavaDataConverter.getValueBySqlType(ResultSet, int, int).

Parameters will be set according with the correspondence defined in JavaTOSqlDataConverter#setParameters(PreparedStatement, int[], Object[])

導入されたバージョン:

1.0