de.mathema.pride
Class ResultSetAccess

java.lang.Object
  de.mathema.pride.ResultSetAccess

public class ResultSetAccess
extends java.lang.Object

This class holds meta information about access methods to JDBC result sets. It is required for PriDE's generic way of fetching record fields from an SQL query result. By default, the class is initialized by its init() method on the first call of #getAccessMethod(String) or #getIndexAccessMethod(String) which in turn are called by the constructors of class RecordDescriptor. However, you might be required to change the default mappings according to your driver's abilities. E.g. the default MySQL JDBC driver turned out not to support making timestamps from ordinary date strings.

Author:

Jan Lessner

Field Summary

static java.lang.String

REVISION_ID

Constructor Summary

ResultSetAccess()

Method Summary

protected static java.lang.reflect.Method	findResultSetAccessMethod(java.lang.String methodName, java.lang.Class<?> addressType)
static void	init() Initialize the class by the following default type mappings: String -> getString Enum -> getString java.util.Date -> getDate java.sql.Date -> getDate java.sql.Timestamp -> getTimestamp Integer/int -> getInt Float/float -> getFloat Double/double -> getDouble Boolean/boolean -> getBoolean BigDecimal -> getBigDecimal Long/long -> getLong Short/short -> getShort Byte/byte -> getByte byte[] -> getBytes Blob -> getBlob Clob -> getClob Map -> getObject, for Postgres only Any array type -> getObject, for Postgres only
static void	putMethod(java.lang.String methodName, java.lang.Class valueType) Adds a result set access method for a specified type

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

REVISION_ID

public static final java.lang.String REVISION_ID

See Also:

Constant Field Values

Constructor Detail

ResultSetAccess

public ResultSetAccess()

Method Detail

putMethod

public static void putMethod(java.lang.String methodName,
                             java.lang.Class valueType)
                      throws java.lang.NoSuchMethodException

Adds a result set access method for a specified type

Parameters:

methodName - Name of the access method to register. The method is assumed to be applicable to the ResultSet class for both access by name and access by index.

valueType - Name of the type to be accessed by the method denoted by parameter methodName.

Throws:

java.lang.NoSuchMethodException - if the specified method is not available for class java.sql.ResultSet

findResultSetAccessMethod

protected static java.lang.reflect.Method findResultSetAccessMethod(java.lang.String methodName,
                                                                    java.lang.Class<?> addressType)
                                                             throws java.lang.NoSuchMethodException

Throws:

java.lang.NoSuchMethodException

init

public static void init()
                 throws java.lang.NoSuchMethodException

Initialize the class by the following default type mappings:

• String -> getString
• Enum -> getString
• java.util.Date -> getDate
• java.sql.Date -> getDate
• java.sql.Timestamp -> getTimestamp
• Integer/int -> getInt
• Float/float -> getFloat
• Double/double -> getDouble
• Boolean/boolean -> getBoolean
• BigDecimal -> getBigDecimal
• Long/long -> getLong
• Short/short -> getShort
• Byte/byte -> getByte
• byte[] -> getBytes
• Blob -> getBlob
• Clob -> getClob
• Map -> getObject, for Postgres only
• Any array type -> getObject, for Postgres only

Throws:

java.lang.NoSuchMethodException