io.requery.sql

Class BaseType<T>

java.lang.Object

io.requery.sql.BaseType<T>

Type Parameters:

T - mapped type

All Implemented Interfaces:

FieldType<T>

Direct Known Subclasses:

BasicType

public abstract class BaseType<T>
extends Object
implements FieldType<T>

Base FieldType implementation, providing basic read/write operations that can be overridden.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	BaseType(Class<T> type, int sqlType) Instantiates a new type instance.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object obj)
Integer	getDefaultLength()
abstract Object	getIdentifier()
String	getIdentifierSuffix()
int	getSqlType()
int	hashCode()
boolean	hasLength()
T	read(ResultSet results, int column) Read the type from a JDBC ResultSet.
String	toString()
void	write(PreparedStatement statement, int index, T value) Write the value into a JDBC PreparedStatement.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

BaseType

protected BaseType(Class<T> type,
                   int sqlType)

Instantiates a new type instance.

Parameters:

type - java class type being mapped

sqlType - the Types being mapped

Method Detail

read

public T read(ResultSet results,
              int column)
       throws SQLException

Description copied from interface: FieldType

Read the type from a JDBC ResultSet.

Specified by:

read in interface FieldType<T>

Parameters:

results - result set

column - column index

Returns:

the read value

Throws:

SQLException - when failing to read a value from the results

write

public void write(PreparedStatement statement,
                  int index,
                  T value)
           throws SQLException

Description copied from interface: FieldType

Write the value into a JDBC PreparedStatement.

Specified by:

write in interface FieldType<T>

Parameters:

statement - statement to use

index - parameter index

value - object value

Throws:

SQLException - when failing to set the value in the statement

getSqlType

public int getSqlType()

Specified by:

getSqlType in interface FieldType<T>

Returns:

One of the Types constants indicating the JDBC type

hasLength

public boolean hasLength()

Specified by:

hasLength in interface FieldType<T>

Returns:

true if this data type has a length constraint, false otherwise.

getDefaultLength

public Integer getDefaultLength()

Specified by:

getDefaultLength in interface FieldType<T>

Returns:

the default length for the type (optional), null if not present.

getIdentifier

public abstract Object getIdentifier()

Specified by:

getIdentifier in interface FieldType<T>

Returns:

the identifier for the type can be String or Keyword

getIdentifierSuffix

public String getIdentifierSuffix()

Specified by:

getIdentifierSuffix in interface FieldType<T>

Returns:

the identifier suffix appears after the identifier and any length size e.g. id(255) suffix

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object