org.apache.ignite.internal.portable

Class PortableSchema

java.lang.Object

org.apache.ignite.internal.portable.PortableSchema

All Implemented Interfaces:

Externalizable, Serializable

public class PortableSchema
extends Object
implements Externalizable

Schema describing portable object content. We rely on the following assumptions: - When amount of fields in the object is low, it is better to inline these values into int fields thus allowing for quick comparisons performed within already fetched L1 cache line. - When there are more fields, we store them inside a hash map.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	PortableSchema.Builder Schema builder.
static class	PortableSchema.Confirmation Order confirmation result.

Field Summary

Fields

Modifier and Type	Field and Description
static int	ORDER_NOT_FOUND Order returned if field is not found.

Constructor Summary

Constructors

Constructor and Description
PortableSchema() Externalizable support.

Method Summary

Methods

Modifier and Type	Method and Description
void	clarifyFieldName(int order, String name) Add field name.
PortableSchema.Confirmation	confirmOrder(int expOrder, String expName) Try speculatively confirming order for the given field name.
boolean	equals(Object o)
int	fieldId(int order) Get field ID by order in footer.
int	hashCode()
int	order(int id) Get field order in footer by field ID.
void	readExternal(ObjectInput in)
int	schemaId()
void	writeExternal(ObjectOutput out)

Methods inherited from class java.lang.Object

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

Field Detail

ORDER_NOT_FOUND

public static final int ORDER_NOT_FOUND

Order returned if field is not found.

See Also:

Constant Field Values

Constructor Detail

PortableSchema

public PortableSchema()

Externalizable support.

Method Detail

schemaId

public int schemaId()

Returns:

Schema ID.

confirmOrder

public PortableSchema.Confirmation confirmOrder(int expOrder,
                                       String expName)

Try speculatively confirming order for the given field name.

Parameters:

expOrder - Expected order.

expName - Expected name.

Returns:

Field ID.

clarifyFieldName

public void clarifyFieldName(int order,
                    String name)

Add field name.

Parameters:

order - Order.

name - Name.

fieldId

public int fieldId(int order)

Get field ID by order in footer.

Parameters:

order - Order.

Returns:

Field ID.

order

public int order(int id)

Get field order in footer by field ID.

Parameters:

id - Field ID.

Returns:

Offset or 0 if there is no such field.

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException

Specified by:

writeExternal in interface Externalizable

Throws:

IOException

readExternal

public void readExternal(ObjectInput in)
                  throws IOException,
                         ClassNotFoundException

Specified by:

readExternal in interface Externalizable

Throws:

IOException

ClassNotFoundException