Package db
Class BinaryField
- java.lang.Object
-
- db.Field
-
- db.BinaryField
-
- All Implemented Interfaces:
java.lang.Comparable<Field>
- Direct Known Subclasses:
BinaryCodedField
,FixedField10
public class BinaryField extends Field
BinaryField
provides a wrapper for variable length binary data which is read or written to a Record.
-
-
Nested Class Summary
-
Nested classes/interfaces inherited from class db.Field
Field.UnsupportedFieldException
-
-
Field Summary
Fields Modifier and Type Field Description protected byte[]
data
static BinaryField
INSTANCE
-
Fields inherited from class db.Field
EMPTY_ARRAY
-
-
Constructor Summary
Constructors Constructor Description BinaryField()
Construct a binary data field with an initial value of null.BinaryField(byte[] data)
Construct a binary data field with an initial value of data.
-
Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description int
compareTo(Field o)
Compares this Field with another Field for order.BinaryField
copyField()
Create new instance of this field with the same value.boolean
equals(java.lang.Object obj)
Determine if the specified Object is another Field which has the same type and value as this Field.byte[]
getBinaryData()
Get data as a byte array.java.lang.String
getValueAsString()
Get field value as a formatted stringstatic java.lang.String
getValueAsString(byte[] data)
Get format value string for byte arrayint
hashCode()
boolean
isNull()
Determine if the field has been set to a null-state or value.boolean
isVariableLength()
BinaryField
newField()
Create new instance of this field type.void
setBinaryData(byte[] data)
Set data from binary byte array.java.lang.String
toString()
-
Methods inherited from class db.Field
canIndex, getBooleanValue, getByteValue, getIntValue, getLongValue, getShortValue, getString, isSameType, setBooleanValue, setByteValue, setIntValue, setLongValue, setShortValue, setString
-
-
-
-
Field Detail
-
INSTANCE
public static final BinaryField INSTANCE
-
data
protected byte[] data
-
-
Method Detail
-
isNull
public boolean isNull()
Description copied from class:Field
Determine if the field has been set to a null-state or value.
-
getBinaryData
public byte[] getBinaryData()
Description copied from class:Field
Get data as a byte array.- Specified by:
getBinaryData
in classField
- Returns:
- byte[]
-
setBinaryData
public void setBinaryData(byte[] data)
Description copied from class:Field
Set data from binary byte array. All variable-length fields must implement this method.- Specified by:
setBinaryData
in classField
- Parameters:
data
- field data
-
isVariableLength
public boolean isVariableLength()
- Overrides:
isVariableLength
in classField
- Returns:
- true if a Field instance is variable length, else false.
-
compareTo
public int compareTo(Field o)
Description copied from class:Field
Compares this Field with another Field for order. Returns a negative integer, zero, or a positive integer as this object is less than, equal to, or greater than the specified Field.
NOTE: Field objects do not fully comply with the Comparable interface. Only the same Field implementations may be compared. In addition, the null state is not considered when comparingPrimitiveField
s which have a zero (0) value.
-
copyField
public BinaryField copyField()
Description copied from class:Field
Create new instance of this field with the same value.
-
newField
public BinaryField newField()
Description copied from class:Field
Create new instance of this field type.
-
equals
public boolean equals(java.lang.Object obj)
Description copied from class:Field
Determine if the specified Object is another Field which has the same type and value as this Field. When comparing aPrimitiveField
, with a null state, a value of zero (0) is used.
-
toString
public java.lang.String toString()
- Overrides:
toString
in classjava.lang.Object
-
getValueAsString
public java.lang.String getValueAsString()
Description copied from class:Field
Get field value as a formatted string- Specified by:
getValueAsString
in classField
- Returns:
- field value string
-
getValueAsString
public static java.lang.String getValueAsString(byte[] data)
Get format value string for byte array- Parameters:
data
- byte array- Returns:
- formatted value string
-
-