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Spring Framework 2.0.5 API 文档英文版
MappingSqlQuery (Spring Framework API 2.0) - Spring Framework 2.0.5 API 文档英文版
org.springframework.jdbc.object
Class MappingSqlQuery
java.lang.Object
org.springframework.jdbc.object.RdbmsOperation
org.springframework.jdbc.object.SqlOperation
org.springframework.jdbc.object.SqlQuery
org.springframework.jdbc.object.MappingSqlQueryWithParameters
org.springframework.jdbc.object.MappingSqlQuery
- All Implemented Interfaces:
- InitializingBean
- Direct Known Subclasses:
- SqlFunction
public abstract class MappingSqlQuery
- extends MappingSqlQueryWithParameters
Reusable query in which concrete subclasses must implement the abstract
mapRow(ResultSet, int) method to convert each row of the JDBC ResultSet
into an object.
Simplifies MappingSqlQueryWithParameters API by dropping parameters and
context. Most subclasses won't care about parameters. If you don't use
contextual information, subclass this instead of MappingSqlQueryWithParameters.
- Author:
- Rod Johnson, Thomas Risberg, Jean-Pierre Pawlak
- See Also:
MappingSqlQueryWithParameters
Method Summary |
protected abstract Object |
mapRow(ResultSet rs,
int rowNum)
Subclasses must implement this method to convert each row of the
ResultSet into an object of the result type. |
protected Object |
mapRow(ResultSet rs,
int rowNum,
Object[] parameters,
Map context)
This method is implemented to invoke the simpler mapRow
template method, ignoring parameters. |
Methods inherited from class org.springframework.jdbc.object.SqlQuery |
execute, execute, execute, execute, execute, execute, execute, execute, execute, execute, execute, execute, executeByNamedParam, executeByNamedParam, findObject, findObject, findObject, findObject, findObject, findObject, findObject, findObject, findObject, findObject, findObjectByNamedParam, findObjectByNamedParam, getRowsExpected, setRowsExpected |
Methods inherited from class org.springframework.jdbc.object.RdbmsOperation |
afterPropertiesSet, allowsUnusedParameters, checkCompiled, compile, declareParameter, getDeclaredParameters, getGeneratedKeysColumnNames, getJdbcTemplate, getResultSetType, getSql, isCompiled, isReturnGeneratedKeys, isUpdatableResults, setDataSource, setFetchSize, setGeneratedKeysColumnNames, setJdbcTemplate, setMaxRows, setQueryTimeout, setResultSetType, setReturnGeneratedKeys, setSql, setTypes, setUpdatableResults, supportsLobParameters, validateNamedParameters, validateParameters |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
MappingSqlQuery
public MappingSqlQuery()
- Constructor that allows use as a JavaBean.
MappingSqlQuery
public MappingSqlQuery(DataSource ds,
String sql)
- Convenient constructor with DataSource and SQL string.
- Parameters:
ds
- DataSource to use to obtain connectionssql
- SQL to run
mapRow
protected final Object mapRow(ResultSet rs,
int rowNum,
Object[] parameters,
Map context)
throws SQLException
- This method is implemented to invoke the simpler mapRow
template method, ignoring parameters.
- Specified by:
mapRow
in class MappingSqlQueryWithParameters
- Parameters:
rs
- ResultSet we're working throughrowNum
- row number (from 0) we're up toparameters
- to the query (passed to the execute() method).
Subclasses are rarely interested in these.
It can be null
if there are no parameters.context
- passed to the execute() method.
It can be null
if no contextual information is need.
- Returns:
- an object of the result type
- Throws:
SQLException
- if there's an error extracting data.
Subclasses can simply not catch SQLExceptions, relying on the
framework to clean up.- See Also:
mapRow(ResultSet, int)
mapRow
protected abstract Object mapRow(ResultSet rs,
int rowNum)
throws SQLException
- Subclasses must implement this method to convert each row of the
ResultSet into an object of the result type.
Subclasses of this class, as opposed to direct subclasses of
MappingSqlQueryWithParameters, don't need to concern themselves
with the parameters to the execute method of the query object.
- Parameters:
rs
- ResultSet we're working throughrowNum
- row number (from 0) we're up to
- Returns:
- an object of the result type
- Throws:
SQLException
- if there's an error extracting data.
Subclasses can simply not catch SQLExceptions, relying on the
framework to clean up.
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