com.ibm.able.data
Class AbleTimeStampLiteral

java.lang.Object
  com.ibm.able.data.AbleLiteral
      com.ibm.able.data.AbleTimeStampLiteral

All Implemented Interfaces:

AbleRd, java.io.Serializable

public class AbleTimeStampLiteral

extends AbleLiteral

implements java.io.Serializable

This class wraps a value of a Java Calendar object inside an AbleLiteral. An object of type AbleTimeStampLiteral contains a single, immutable field whose type is Calendar. Instances of AbleTimeStampLiteral are used by the Able rules classes in clauses and expressions. In addition, this class provides methods for converting a Calendar to a String value as well as other logical comparison and math operator methods useful when dealing with a Calendar.

See Also:

Serialized Form

Field Summary

protected java.util.Calendar

myValue The immutable value of this literal.

Constructor Summary

AbleTimeStampLiteral()
Create a new literal with the current time as the initial value.

AbleTimeStampLiteral(java.util.Calendar theValue)
Create a new literal with the specified value.

AbleTimeStampLiteral(java.lang.String theValue)
Create a new literal with the specified value.

Method Summary

java.lang.String	arlCRdString() Return a formal ARL "clause read" string that describes this data object.
boolean	cmpEq(AbleRd theRhs) Comparison, equal to: compare the current value of this data object to the current value of theRhs.
boolean	cmpGt(AbleRd theRhs) Comparison, greater than: compare the current value of this data object to the current value of theRhs.
boolean	cmpGtEq(AbleRd theRhs) Comparison, greater than or equal to: compare the current value of this data object to the current value of theRhs.
boolean	cmpLt(AbleRd theRhs) Comparison, less than: compare the current value of this data object to the current value of theRhs.
boolean	cmpLtEq(AbleRd theRhs) Comparison, less than or equal to: compare the current value of this data object to the current value of theRhs.
boolean	cmpNeq(AbleRd theRhs) Comparison, not equal to: compare the current value of this data object to the current value of theRhs.
boolean	equals(java.lang.Object theOtherObject)
java.lang.String	formatDateAndTime(java.util.Calendar theCalendar) Return a formatted string representation of the specified Calendar object using the default format.
boolean	getBooleanValue() Retrieve the value of this data object as a boolean value.
int	getDataType() Retrieve the data type of this data object.
java.lang.Class	getDataTypeClass() Retrieve the actual class of this object's underlying data type.
java.lang.String	getDataTypeClassName() Retrieve the name of the class of this object's underlying data type.
AbleFuzzySet	getFuzzyValue() Retrieve the value of this data object as a fuzzy value.
java.lang.Object	getGenericValue() Retrieve the value of this data object as an Object.
double	getNumericValue() Retrieve the value of this data object as a numeric value.
java.lang.String	getStringValue() Retrieve the value of this data object as a string value.
AbleLiteral	getValue() Retrieve the value of this data object as a literal.
int	hashCode()
java.lang.String	toString() Retrieve a string describing (the contents of) the object.
java.lang.String	traceString(int theTraceStringFlavor) Retrieve a string describing (the contents of) the object.
java.lang.String	xmlCRdString() Return a formal XML "clause read" string that describes this data object.

Methods inherited from class com.ibm.able.data.AbleLiteral

bitwiseAND, bitwiseNOT, bitwiseOR, bitwiseShiftLeft, bitwiseShiftRight, bitwiseShiftRightZeroFill, bitwiseXOR, cmpIs, compDivide, compMinus, compModulo, compMultiply, compPlus, compUnaryMinus, getDataTypeAsString, getReferent, getReferents, getTemplateString, isConstant, logicalAND, logicalNOT, logicalOR

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

myValue

protected java.util.Calendar myValue

The immutable value of this literal.

Constructor Detail

AbleTimeStampLiteral

public AbleTimeStampLiteral()

Create a new literal with the current time as the initial value.

AbleTimeStampLiteral

public AbleTimeStampLiteral(java.util.Calendar theValue)

Create a new literal with the specified value.

Parameters:

theValue - The value to which this literal is to be set.

AbleTimeStampLiteral

public AbleTimeStampLiteral(java.lang.String theValue)

Create a new literal with the specified value.

Parameters:

theValue - The value to which this literal is to be set.

Method Detail

getBooleanValue

public boolean getBooleanValue()
                        throws AbleDataException

Retrieve the value of this data object as a boolean value.

Specified by:

getBooleanValue in interface AbleRd

Specified by:

getBooleanValue in class AbleLiteral

Returns:

A boolean, if the value of this object can be represented as a boolean value. If the current value is 0.0, false is returned; otherwise true is returned.

Throws:

AbleDataException - If the value of this object cannot be represented as a boolean value.

getFuzzyValue

public AbleFuzzySet getFuzzyValue()
                           throws AbleDataException

Retrieve the value of this data object as a fuzzy value.

Specified by:

getFuzzyValue in interface AbleRd

Specified by:

getFuzzyValue in class AbleLiteral

Returns:

A fuzzy set, if the value of this object can be represented as a fuzzy value. This method always throws an exception.

Throws:

AbleDataException - If the value of this object cannot be represented as a fuzzy value.

getGenericValue

public java.lang.Object getGenericValue()
                                 throws AbleDataException

Retrieve the value of this data object as an Object.

Specified by:

getGenericValue in interface AbleRd

Specified by:

getGenericValue in class AbleLiteral

Returns:

A Double object.

Throws:

AbleDataException - If the value of this object cannot be represented as an Object.

getNumericValue

public double getNumericValue()
                       throws AbleDataException

Retrieve the value of this data object as a numeric value.

Specified by:

getNumericValue in interface AbleRd

Specified by:

getNumericValue in class AbleLiteral

Returns:

A double, if the value of this object can be represented as a numeric value.

Throws:

AbleDataException - If the value of this object cannot be represented as a numeric value.

getStringValue

public java.lang.String getStringValue()
                                throws AbleDataException

Retrieve the value of this data object as a string value.

Specified by:

getStringValue in interface AbleRd

Specified by:

getStringValue in class AbleLiteral

Returns:

A String, if the value of this object can be represented as a string value. Double.toString() is used to produce the string.

Throws:

AbleDataException - If the value of this object cannot be represented as a string value.

getValue

public AbleLiteral getValue()
                     throws AbleDataException

Retrieve the value of this data object as a literal.

Specified by:

getValue in interface AbleRd

Specified by:

getValue in class AbleLiteral

Returns:

An AbleNumericLiteral object.

Throws:

AbleDataException - If the value of this object cannot be represented as a literal.

getDataTypeClass

public java.lang.Class getDataTypeClass()

Description copied from class: AbleLiteral

Retrieve the actual class of this object's underlying data type.

Specified by:

getDataTypeClass in interface AbleRd

Specified by:

getDataTypeClass in class AbleLiteral

Returns:

The class of the underlying data type.

getDataTypeClassName

public java.lang.String getDataTypeClassName()

Description copied from class: AbleLiteral

Retrieve the name of the class of this object's underlying data type.

Specified by:

getDataTypeClassName in interface AbleRd

Specified by:

getDataTypeClassName in class AbleLiteral

Returns:

A String that is the name of the class of the underlying data type.

arlCRdString

public java.lang.String arlCRdString()

Return a formal ARL "clause read" string that describes this data object.

Specified by:

arlCRdString in interface AbleRd

Specified by:

arlCRdString in class AbleLiteral

Returns:

A String describing the data object in formal rule language. Double.toString() is used to produce the string.

xmlCRdString

public java.lang.String xmlCRdString()

Return a formal XML "clause read" string that describes this data object.

Specified by:

xmlCRdString in interface AbleRd

Specified by:

xmlCRdString in class AbleLiteral

Returns:

A String describing the data object in XML. A form similar to "<numericLiteral value=\"n.m\"/>" is returned.

formatDateAndTime

public java.lang.String formatDateAndTime(java.util.Calendar theCalendar)

Return a formatted string representation of the specified Calendar object using the default format.

Parameters:

theCalendar - A Calendar object.

Returns:

A formatted string.

cmpEq

public boolean cmpEq(AbleRd theRhs)
              throws AbleDataException

Comparison, equal to: compare the current value of this data object to the current value of theRhs.

"==" is used for numeric and boolean compares; equals() is used for Object compares; and Collator.equals() is used for String compares.

Specified by:

cmpEq in interface AbleRd

Overrides:

cmpEq in class AbleLiteral

Parameters:

theRhs - The right-hand side of the comparison.

Returns:

true, if this data object is equal to theRhs; false, otherwise.

Throws:

AbleDataException - If the right-hand side cannot be converted (if necessary) and compared to this data object.

cmpGt

public boolean cmpGt(AbleRd theRhs)
              throws AbleDataException

Comparison, greater than: compare the current value of this data object to the current value of theRhs.

">" is used for numeric compares; Collator.compare() is used for String compares. Use of other data types on the left-hand side causes an exception.

Specified by:

cmpGt in interface AbleRd

Overrides:

cmpGt in class AbleLiteral

Parameters:

theRhs - The right-hand side of the comparison.

Returns:

true, if this data object is greater than theRhs; false, otherwise.

Throws:

AbleDataException - If the right-hand side cannot be converted (if necessary) and compared to this data object.

cmpGtEq

public boolean cmpGtEq(AbleRd theRhs)
                throws AbleDataException

Comparison, greater than or equal to: compare the current value of this data object to the current value of theRhs.

">=" is used for numeric compares; Collator.compare() is used for String compares. Use of other data types on the left-hand side causes an exception.

Specified by:

cmpGtEq in interface AbleRd

Overrides:

cmpGtEq in class AbleLiteral

Parameters:

theRhs - The right-hand side of the comparison.

Returns:

true, if this data object is greater than or equal to theRhs; false, otherwise.

Throws:

AbleDataException - If the right-hand side cannot be converted (if necessary) and compared to this data object.

cmpLt

public boolean cmpLt(AbleRd theRhs)
              throws AbleDataException

Comparison, less than: compare the current value of this data object to the current value of theRhs.

"<" is used for numeric compares; Collator.compare() is used for String compares. Use of other data types on the left-hand side causes an exception.

Specified by:

cmpLt in interface AbleRd

Overrides:

cmpLt in class AbleLiteral

Parameters:

theRhs - The right-hand side of the comparison.

Returns:

true, if this data object is less than theRhs; false, otherwise.

Throws:

AbleDataException - If the right-hand side cannot be converted (if necessary) and compared to this data object.

cmpLtEq

public boolean cmpLtEq(AbleRd theRhs)
                throws AbleDataException

Comparison, less than or equal to: compare the current value of this data object to the current value of theRhs.

"<=" is used for numeric compares; Collator.compare() is used for String compares. Use of other data types on the left-hand side causes an exception.

Specified by:

cmpLtEq in interface AbleRd

Overrides:

cmpLtEq in class AbleLiteral

Parameters:

theRhs - The right-hand side of the comparison.

Returns:

true, if this data object is less than or equal to theRhs; false, otherwise.

Throws:

AbleDataException - If the right-hand side cannot be converted (if necessary) and compared to this data object.

cmpNeq

public boolean cmpNeq(AbleRd theRhs)
               throws AbleDataException

Comparison, not equal to: compare the current value of this data object to the current value of theRhs.

"!=" is used for numeric and boolean compares; ! equals() is used for Object compares; and ! Collator.equals() is used for String compares.

Specified by:

cmpNeq in interface AbleRd

Overrides:

cmpNeq in class AbleLiteral

Parameters:

theRhs - The right-hand side of the comparison.

Returns:

true, if this data object is not equal to theRhs; false, otherwise.

Throws:

AbleDataException - If the right-hand side cannot be converted (if necessary) and compared to this data object.

equals

public boolean equals(java.lang.Object theOtherObject)

hashCode

public int hashCode()

toString

public java.lang.String toString()

Description copied from class: AbleLiteral

Retrieve a string describing (the contents of) the object.

Overrides:

toString in class AbleLiteral

Returns:

A String containing the current contents of the object.

traceString

public java.lang.String traceString(int theTraceStringFlavor)

Retrieve a string describing (the contents of) the object.

Specified by:

traceString in interface AbleRd

Specified by:

traceString in class AbleLiteral

Parameters:

theTraceStringFlavor - An Able.TraceStringFlavor value.

Returns:

A String containing the current contents of the object.

getDataType

public int getDataType()

Description copied from class: AbleLiteral

Retrieve the data type of this data object.

Specified by:

getDataType in interface AbleRd

Specified by:

getDataType in class AbleLiteral

Returns:

An AbleData.<DataType> constant.

See Also:

AbleRd.getDataType()