Package com.apple.foundationdb.relational.api

Class FieldDescription

java.lang.Object

com.apple.foundationdb.relational.api.FieldDescription

@API(EXPERIMENTAL)
public final class FieldDescription
extends Object

A description of an individual field. Note that this representation is indicative of JDBC-API level information. That is, it is used to hold information that is necessary to represent a given column field in a JDBC MetaData API.

Method Summary

Modifier and Type	Method	Description
static FieldDescription	array(String fieldName, int nullable, ArrayMetaData definition)	Create an array field.
boolean	equals(Object other)
ArrayMetaData	getArrayMetaData()
StructMetaData	getFieldMetaData()
String	getName()
int	getSqlTypeCode()
int	hashCode()
boolean	isArray()
int	isNullable()
boolean	isPhantom()
boolean	isStruct()
static FieldDescription	primitive(String fieldName, int sqlTypeCode, int nullable)	Create a primitive field.
static FieldDescription	primitive(String fieldName, int sqlTypeCode, int nullable, boolean phantom)	Create a primitive field.
static FieldDescription	struct(String fieldName, int nullable, StructMetaData definition)	Create a struct field.

Methods inherited from class java.lang.Object

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

Method Details

primitive

public static FieldDescription primitive(@Nonnull
 String fieldName,
 int sqlTypeCode,
 int nullable)

Create a primitive field. This is a convenience factory method for a more complicated constructor. Equivalent to primitive(String, int, int, boolean), where phantom == false.

Parameters:

fieldName - the name of the field.

sqlTypeCode - the SQL type code for this field. Should match values found in Types

nullable - one of DatabaseMetaData.columnNoNulls, DatabaseMetaData.columnNullable, or DatabaseMetaData.columnNullableUnknown.

Returns:

a FieldDescription for the field.

primitive

public static FieldDescription primitive(@Nonnull
 String fieldName,
 int sqlTypeCode,
 int nullable,
 boolean phantom)

Create a primitive field. This is a convenience factory method for a more complicated constructor.

Parameters:

fieldName - the name of the field.

sqlTypeCode - the SQL type code for this field. Should match values found in Types

nullable - one of DatabaseMetaData.columnNoNulls, DatabaseMetaData.columnNullable, or DatabaseMetaData.columnNullableUnknown.

phantom - if true, this column should be treated as "phantom" in the API. That is, its entries are present in the returned row, but are not represented as part of the "return value". In other words, the values take up space in the physical arrays, but are not considered part of the actual return of the query, requiring the implementation to adjust for the field's position.

Returns:

a FieldDescription for the field.

struct

public static FieldDescription struct(@Nonnull
 String fieldName,
 int nullable,
 StructMetaData definition)

Create a struct field. This is a convenience factory method for a more complicated constructor.

Parameters:

fieldName - the name of the field.

nullable - one of DatabaseMetaData.columnNoNulls, DatabaseMetaData.columnNullable, or DatabaseMetaData.columnNullableUnknown.

definition - the definition of the struct value itself.

Returns:

a FieldDescription for the field.

array

public static FieldDescription array(@Nonnull
 String fieldName,
 int nullable,
 ArrayMetaData definition)

Create an array field. This is a convenience factory method for a more complicated constructor.

Parameters:

fieldName - the name of the field.

nullable - one of DatabaseMetaData.columnNoNulls, DatabaseMetaData.columnNullable, or DatabaseMetaData.columnNullableUnknown.

definition - the metadata description of the contents of the array.

Returns:

a FieldDescription for the field.

getName

public String getName()

getSqlTypeCode

public int getSqlTypeCode()

isStruct

public boolean isStruct()

isArray

public boolean isArray()

getFieldMetaData

public StructMetaData getFieldMetaData()

getArrayMetaData

public ArrayMetaData getArrayMetaData()

isNullable

public int isNullable()

isPhantom

public boolean isPhantom()

equals

public boolean equals(Object other)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object