public class BooleanType extends BaseDataType
DataType
representing a Boolean value.DataType.BinaryRepresentation, DataType.ExactNumeric, DataType.NonFixedPrecision
Constructor and Description |
---|
BooleanType() |
Modifier and Type | Method and Description |
---|---|
boolean |
accepts(java.lang.Object value)
Returns
true iff value is null , or a
Boolean . |
java.lang.Object |
convert(java.lang.Object value)
Returns a
Boolean converted from the given value , or throws
IllegalArgumentException if the given value isn't
acceptable . |
int |
getColumnDisplaySize()
Value returned by
ResultSetMetaData#getColumnDisplaySize for this data
type. |
java.util.Comparator |
getComparator()
This base implementation simply returns a
ComparableComparator . |
int |
getJdbcType()
Returns the JDBC
type code most closely matching this type. |
int |
getPrecision()
Value returned by
ResultSetMetaData#getPrecision for this data type. |
java.lang.String |
getPreferredValueClassName()
Returns the "normal" type returned by
DataType.convert(java.lang.Object) . |
DataType |
makeNewInstance()
Creates a new instance of this DataType implementation.
|
java.lang.Object |
read(java.io.DataInput in)
Instantiate an object of my type from the given
DataInput . |
boolean |
toBoolean(java.lang.Object value)
Convert the given non-
null value to a boolean ,
or throw a SQLException . |
java.lang.String |
toString()
Returns
"boolean" |
void |
write(java.lang.Object value,
java.io.DataOutput out)
Writes the given value to the given
DataOutput . |
compare, getLiteralPrefix, getLiteralSuffix, getNullableCode, getPrecisionRadix, getScale, getSearchableCode, isCaseSensitive, isCurrency, isUnsigned, successor, supportsSuccessor, toBigDecimal, toBigInteger, toBlob, toByte, toByteArray, toClob, toDate, toDouble, toFloat, toInt, toLong, toNumber, toShort, toString, toTime, toTimestamp, toURL
public int getJdbcType()
DataType
type code
most closely matching this type.getJdbcType
in interface DataType
getJdbcType
in class BaseDataType
Types.BOOLEAN
public java.lang.String getPreferredValueClassName()
DataType
DataType.convert(java.lang.Object)
. Returns
java.lang.Object if unknown.getPreferredValueClassName
in interface DataType
getPreferredValueClassName
in class BaseDataType
AxionResultSetMetaData.getColumnClassName(int)
public int getPrecision()
DataType
ResultSetMetaData#getPrecision
for this data type.getPrecision
in interface DataType
getPrecision
in class BaseDataType
ResultSetMetaData.getPrecision(int)
public int getColumnDisplaySize()
DataType
ResultSetMetaData#getColumnDisplaySize
for this data
type.getColumnDisplaySize
in interface DataType
getColumnDisplaySize
in class BaseDataType
ResultSetMetaData.getColumnDisplaySize(int)
public java.util.Comparator getComparator()
BaseDataType
ComparableComparator
.getComparator
in class BaseDataType
public java.lang.String toString()
"boolean"
toString
in class java.lang.Object
"boolean"
public boolean toBoolean(java.lang.Object value) throws AxionException
DataType
null
value to a boolean
,
or throw a SQLException
.toBoolean
in interface DataType
toBoolean
in class BaseDataType
AxionException
ResultSet.getBoolean(int)
public boolean accepts(java.lang.Object value)
true
iff value is null
, or a
Boolean
.accepts
in interface DataType
accepts
in class BaseDataType
value
- non- null
valuepublic java.lang.Object convert(java.lang.Object value) throws java.lang.IllegalArgumentException
Boolean
converted from the given value , or throws
IllegalArgumentException
if the given value isn't
acceptable
.convert
in interface DataType
convert
in class BaseDataType
java.lang.IllegalArgumentException
public java.lang.Object read(java.io.DataInput in) throws java.io.IOException
DataType
DataInput
. The next
sequence of bytes to be read from the DataInput
will have been
written by DataType.write(java.lang.Object, java.io.DataOutput)
.read
in interface DataType
read
in class BaseDataType
java.io.IOException
write(java.lang.Object, java.io.DataOutput)
public void write(java.lang.Object value, java.io.DataOutput out) throws java.io.IOException
DataOutput
.
Null
values are written as (byte)-1
,
false
values are written as (byte)0
,
true
values are written as (byte)1
.write
in interface DataType
write
in class BaseDataType
value
- the value to write, which must be acceptable
java.io.IOException
public DataType makeNewInstance()
DataType
makeNewInstance
in interface DataType
makeNewInstance
in interface DataTypeFactory
makeNewInstance
in class BaseDataType