Package db
Class StringField
- java.lang.Object
-
- db.Field
-
- db.StringField
-
-
Nested Class Summary
-
Nested classes/interfaces inherited from class db.Field
Field.UnsupportedFieldException
-
-
Field Summary
Fields Modifier and Type Field Description static StringField
INSTANCE
static StringField
NULL_VALUE
Null string field value-
Fields inherited from class db.Field
EMPTY_ARRAY
-
-
Constructor Summary
Constructors Constructor Description StringField()
Construct a String field with an initial value of null.StringField(java.lang.String str)
Construct a String field with an initial value of s.
-
Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description int
compareTo(Field o)
Compares this Field with another Field for order.StringField
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
getString()
Get field as a String value.java.lang.String
getValueAsString()
Get field value as a formatted stringint
hashCode()
boolean
isNull()
Determine if the field has been set to a null-state or value.boolean
isVariableLength()
StringField
newField()
Create new instance of this field type.void
setBinaryData(byte[] bytes)
Set data from binary byte array.void
setString(java.lang.String str)
Set field's String value.java.lang.String
toString()
-
Methods inherited from class db.Field
canIndex, getBooleanValue, getByteValue, getIntValue, getLongValue, getShortValue, isSameType, setBooleanValue, setByteValue, setIntValue, setLongValue, setShortValue
-
-
-
-
Field Detail
-
NULL_VALUE
public static final StringField NULL_VALUE
Null string field value
-
INSTANCE
public static final StringField INSTANCE
-
-
Method Detail
-
isNull
public boolean isNull()
Description copied from class:Field
Determine if the field has been set to a null-state or value.
-
getString
public java.lang.String getString()
Description copied from class:Field
Get field as a String value.
-
setString
public void setString(java.lang.String str)
Description copied from class:Field
Set field's String value.
-
isVariableLength
public boolean isVariableLength()
- Overrides:
isVariableLength
in classField
- Returns:
- true if a Field instance is variable length, else false.
-
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
-
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.
-
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[] bytes)
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:
bytes
- field data
-
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 StringField copyField()
Description copied from class:Field
Create new instance of this field with the same value.
-
newField
public StringField newField()
Description copied from class:Field
Create new instance of this field type.
-
-