io.requery.sql

Interface FieldType<T>

All Known Subinterfaces:

PrimitiveBooleanType, PrimitiveByteType, PrimitiveDoubleType, PrimitiveFloatType, PrimitiveIntType, PrimitiveLongType, PrimitiveShortType

All Known Implementing Classes:

BaseType, BasicType, BigIntType, BinaryType, BlobType, BooleanType, ClobType, DateType, DecimalType, FloatType, IntegerType, JavaDateType, NVarCharType, RealType, SmallIntType, TimeStampType, TimeType, TinyIntType, VarBinaryType, VarCharType

public interface FieldType<T>

Represents a stored SQL type which can be read from a JDBC ResultSet and written to a JDBC PreparedStatement.

Method Summary

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

Method Detail

read

@Nullable
T read(ResultSet results,
                 int column)
          throws SQLException

Read the type from a JDBC ResultSet.

Parameters:

results - result set

column - column index

Returns:

the read value

Throws:

SQLException - when failing to read a value from the results

write

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

Write the value into a JDBC PreparedStatement.

Parameters:

statement - statement to use

index - parameter index

value - object value

Throws:

SQLException - when failing to set the value in the statement

getSqlType

int getSqlType()

Returns:

One of the Types constants indicating the JDBC type

hasLength

boolean hasLength()

Returns:

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

getDefaultLength

@Nullable
Integer getDefaultLength()

Returns:

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

getIdentifier

Object getIdentifier()

Returns:

the identifier for the type can be String or Keyword

getIdentifierSuffix

@Nullable
String getIdentifierSuffix()

Returns:

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