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java.lang.Objectorg.axiondb.types.BaseDataType
org.axiondb.types.StringType
public class StringType
A DataType
representing a String
value.
Nested Class Summary |
---|
Nested classes/interfaces inherited from interface org.axiondb.DataType |
---|
DataType.BinaryRepresentation, DataType.ExactNumeric, DataType.NonFixedPrecision |
Constructor Summary | |
---|---|
StringType()
|
Method Summary | |
---|---|
boolean |
accepts(Object value)
Returns true iff value is null or a
String . |
int |
compare(Object a,
Object b)
|
Object |
convert(Object value)
Returns a String 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. |
protected Comparator |
getComparator()
This base implementation simply returns a ComparableComparator . |
int |
getJdbcType()
Returns the JDBC type code most closely matching this type. |
String |
getLiteralPrefix()
Prefix used to quote a literal to delimit value for this type when in SQL syntax or result display |
String |
getLiteralSuffix()
Suffix used to quote a literal to delimit value for this type when in SQL syntax or result display |
int |
getPrecision()
Value returned by ResultSetMetaData#getPrecision for this data type. |
String |
getPreferredValueClassName()
Returns the "normal" type returned by DataType.convert(java.lang.Object) . |
short |
getSearchableCode()
Code indicating how much WHERE ... |
static StringType |
instance()
|
boolean |
isCaseSensitive()
For character and string-related types, indicates whether type acknowledges case when storing and retrieving values |
DataType |
makeNewInstance()
Creates a new instance of this DataType implementation. |
Object |
read(DataInput in)
Instantiate an object of my type from the given DataInput . |
Object |
successor(Object value)
Returns the successor for the given value. |
boolean |
supportsSuccessor()
Returns true if the DataType.successor(java.lang.Object) method is supported, false
otherwise. |
byte[] |
toByteArray(Object value)
Convert the given non- null value to a byte[] ,
or throw a AxionException . |
String |
toString()
Returns "string" |
void |
write(Object value,
DataOutput out)
Writes the given value to the given DataOutput . |
Methods inherited from class org.axiondb.types.BaseDataType |
---|
getNullableCode, getPrecisionRadix, getScale, isCurrency, isUnsigned, toBigDecimal, toBigInteger, toBlob, toBoolean, toByte, toClob, toDate, toDouble, toFloat, toInt, toLong, toNumber, toShort, toString, toTime, toTimestamp, toURL |
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Methods inherited from interface java.util.Comparator |
---|
equals |
Constructor Detail |
---|
public StringType()
Method Detail |
---|
public int getJdbcType()
DataType
type code
most closely matching this type.
getJdbcType
in interface DataType
getJdbcType
in class BaseDataType
public 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 getColumnDisplaySize()
DataType
ResultSetMetaData#getColumnDisplaySize
for this data
type.
getColumnDisplaySize
in interface DataType
getColumnDisplaySize
in class BaseDataType
ResultSetMetaData.getColumnDisplaySize(int)
public int getPrecision()
DataType
ResultSetMetaData#getPrecision
for this data type.
getPrecision
in interface DataType
getPrecision
in class BaseDataType
ResultSetMetaData.getPrecision(int)
public boolean isCaseSensitive()
DataType
isCaseSensitive
in interface DataType
isCaseSensitive
in class BaseDataType
DatabaseMetaData.getTypeInfo()
,
ResultSetMetaData.isCaseSensitive(int)
public String toString()
"string"
toString
in class Object
"string"
public byte[] toByteArray(Object value) throws AxionException
DataType
null
value to a byte[]
,
or throw a AxionException
.
toByteArray
in interface DataType
toByteArray
in class BaseDataType
AxionException
ResultSet.getBytes(int)
public boolean accepts(Object value)
true
iff value is null
or a
String
.
accepts
in interface DataType
accepts
in class BaseDataType
value
- non- null
valuepublic Object convert(Object value) throws AxionException
String
converted from the given value , or throws
IllegalArgumentException
if the given value isn't
acceptable
.
convert
in interface DataType
convert
in class BaseDataType
AxionException
public boolean supportsSuccessor()
DataType
true
if the DataType.successor(java.lang.Object)
method is supported, false
otherwise.
supportsSuccessor
in interface DataType
supportsSuccessor
in class BaseDataType
public Object successor(Object value) throws IllegalArgumentException
DataType
successor
in interface DataType
successor
in class BaseDataType
IllegalArgumentException
public Object read(DataInput in) throws 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
IOException
write(java.lang.Object, java.io.DataOutput)
public void write(Object value, DataOutput out) throws IOException
DataOutput
.
Null
values are written as "null", false
, the
non-null String "null"
is written as "null", true
,
all other values are written directly.
write
in interface DataType
write
in class BaseDataType
value
- the value to write, which must be acceptable
IOException
public DataType makeNewInstance()
DataType
makeNewInstance
in interface DataType
makeNewInstance
in interface DataTypeFactory
makeNewInstance
in class BaseDataType
public String getLiteralPrefix()
DataType
getLiteralPrefix
in interface DataType
getLiteralPrefix
in class BaseDataType
DatabaseMetaData.getTypeInfo()
public String getLiteralSuffix()
DataType
getLiteralSuffix
in interface DataType
getLiteralSuffix
in class BaseDataType
DatabaseMetaData.getTypeInfo()
public short getSearchableCode()
DataType
WHERE ... LIKE
support is available across
a column of this type
getSearchableCode
in interface DataType
getSearchableCode
in class BaseDataType
DatabaseMetaData.getTypeInfo()
public int compare(Object a, Object b)
compare
in interface Comparator
compare
in class BaseDataType
protected Comparator getComparator()
BaseDataType
ComparableComparator
.
getComparator
in class BaseDataType
public static final StringType instance()
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