com.pervasive.datarush.tokens.record

Class MutableComposite

java.lang.Object

com.pervasive.datarush.tokens.record.MutableComposite

All Implemented Interfaces:

RecordSettable, TokenSettable, RecordTyped, TokenTyped

public class MutableComposite
extends Object
implements RecordSettable

A composite of settable scalar fields. A MutableComposite can be viewed as the loosest possible implementation of RecordSettable.

See Also:

RecordRegister

Constructor Summary

Constructors

Constructor and Description
MutableComposite(RecordTokenType type, ScalarSettable[] fields) Construct a composite with the described schema using the supplied ScalarSettable objects.
MutableComposite(T... fields) Construct a composite with the described schema using the supplied Named and ScalarSettable objects.

Method Summary

Modifier and Type	Method and Description
ScalarSettable	getField(int index) Get the field at the given index within the list of fields.
ScalarSettable	getField(String fieldName) Gets the settable for the field with the given name.
ScalarSettable[]	getFields() Gets the settables for all fields in the record
RecordTokenType	getType() Gets the type of data tokens handled by the implementor.
void	set(TokenValued value) Sets the contained value to the given token value.
void	setNull() Sets the contained value to be null valued.
void	setZero() Sets the contained value to be zero valued.
int	size() Gets the number of fields in the record schema.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MutableComposite

public MutableComposite(T... fields)

Construct a composite with the described schema using the supplied Named and ScalarSettable objects. The record type will be inferred from the provided fields.

Parameters:

fields - the named ScalarSettable objects to contain field values

MutableComposite

public MutableComposite(RecordTokenType type,
                        ScalarSettable[] fields)

Construct a composite with the described schema using the supplied ScalarSettable objects. The field types in the schema will be cross-validated against the given objects.

Parameters:

type - the record schema to use for the resulting composite

fields - the ScalarSettable objects to contain field values

Throws:

DRException - if the provided field types disagree with the types of the field objects

Method Detail

getType

public RecordTokenType getType()

Description copied from interface: TokenTyped

Gets the type of data tokens handled by the implementor.

Specified by:

getType in interface RecordSettable

Specified by:

getType in interface RecordTyped

Specified by:

getType in interface TokenTyped

Returns:

the type of tokens associated with the class.

size

public int size()

Description copied from interface: RecordSettable

Gets the number of fields in the record schema.

Specified by:

size in interface RecordSettable

Returns:

the number of fields

getField

public ScalarSettable getField(String fieldName)

Description copied from interface: RecordSettable

Gets the settable for the field with the given name.

Specified by:

getField in interface RecordSettable

Parameters:

fieldName - the field name

Returns:

the settable field

getField

public ScalarSettable getField(int index)

Description copied from interface: RecordSettable

Get the field at the given index within the list of fields.

Specified by:

getField in interface RecordSettable

Parameters:

index - zero-based index into the field list

Returns:

the settable field

getFields

public ScalarSettable[] getFields()

Description copied from interface: RecordSettable

Gets the settables for all fields in the record

Specified by:

getFields in interface RecordSettable

Returns:

an array containing the settable fields

set

public void set(TokenValued value)

Description copied from interface: TokenSettable

Sets the contained value to the given token value. The given value must have a type compatible with this object.

Specified by:

set in interface TokenSettable

Parameters:

value - the value to which to set the container

setNull

public void setNull()

Description copied from interface: TokenSettable

Sets the contained value to be null valued.

Specified by:

setNull in interface TokenSettable

setZero

public void setZero()

Description copied from interface: TokenSettable

Sets the contained value to be zero valued.

Specified by:

setZero in interface TokenSettable