Uses of Class
edu.caltech.nanodb.relations.SQLDataType

Packages that use SQLDataType

Package	Description
edu.caltech.nanodb.expressions	This package contains classes for representing and evaluating arithmetic and logical expressions.
edu.caltech.nanodb.queryeval	This package contains the query-evaluation components of the database.
edu.caltech.nanodb.relations	This package contains the basic data-types for representing relations in NanoDB.

Uses of SQLDataType in edu.caltech.nanodb.expressions

Fields in edu.caltech.nanodb.expressions with type parameters of type SQLDataType

Modifier and Type	Field	Description
private static java.util.HashMap<java.lang.Class,SQLDataType>	TypeConverter.sqlTypeMapping	A mapping from the various Java types used for expression results, to their corresponding SQL data types.

Methods in edu.caltech.nanodb.expressions that return SQLDataType

Modifier and Type	Method	Description
private SQLDataType	ArithmeticOperator.getSQLResultType(SQLDataType lType, SQLDataType rType)
static SQLDataType	TypeConverter.getSQLType(java.lang.Object obj)	This method attempts to assign a SQL data type to a value produced by the expression classes.

Methods in edu.caltech.nanodb.expressions with parameters of type SQLDataType

Modifier and Type	Method	Description
private SQLDataType	ArithmeticOperator.getSQLResultType(SQLDataType lType, SQLDataType rType)

Uses of SQLDataType in edu.caltech.nanodb.queryeval

Fields in edu.caltech.nanodb.queryeval declared as SQLDataType

Modifier and Type	Field	Description
private SQLDataType	ColumnStatsCollector.sqlType	The SQL data-type for the column that stats are being collected for.

Fields in edu.caltech.nanodb.queryeval with type parameters of type SQLDataType

Modifier and Type	Field	Description
private static java.util.HashSet<SQLDataType>	SelectivityEstimator.SUPPORTED_TYPES_COMPARE_ESTIMATES	This collection specifies the data-types that support comparison selectivity estimates (not including equals or not-equals).

Methods in edu.caltech.nanodb.queryeval with parameters of type SQLDataType

Modifier and Type	Method	Description
static boolean	SelectivityEstimator.typeSupportsCompareEstimates(SQLDataType type)	Returns true if the database supports selectivity estimates for comparisons (other than equals and not-equals) on the specified SQL data type.

Constructors in edu.caltech.nanodb.queryeval with parameters of type SQLDataType

Constructor	Description
ColumnStatsCollector(SQLDataType sqlType)	Initializes a new column-stats collector object for a column with the specified base SQL datatype.

Uses of SQLDataType in edu.caltech.nanodb.relations

Fields in edu.caltech.nanodb.relations declared as SQLDataType

Modifier and Type	Field	Description
private SQLDataType	ColumnType.baseType	The base SQL data-type for the attribute.

Methods in edu.caltech.nanodb.relations that return SQLDataType

Modifier and Type	Method	Description
static SQLDataType	SQLDataType.findType(byte typeID)	Given the specified ID, this method returns the corresponding SQL data type enum value, or it returns null if the type value doesn't signify any SQL data type in this enumeration.
SQLDataType	ColumnType.getBaseType()	Returns the base datatype for the attribute.
static SQLDataType	SQLDataType.valueOf(java.lang.String name)	Returns the enum constant of this type with the specified name.
static SQLDataType[]	SQLDataType.values()	Returns an array containing the constants of this enum type, in the order they are declared.

Methods in edu.caltech.nanodb.relations with parameters of type SQLDataType

Modifier and Type	Method	Description
static boolean	SQLDataType.isNumber(SQLDataType type)
static boolean	SQLDataType.isString(SQLDataType type)

Constructors in edu.caltech.nanodb.relations with parameters of type SQLDataType

Constructor	Description
ColumnType(SQLDataType baseType)	Construct a new attribute-type instance, with the specified base SQL datatype.