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

Packages that use ColumnRefs

Package	Description
edu.caltech.nanodb.indexes
edu.caltech.nanodb.relations	This package contains the basic data-types for representing relations in NanoDB.

Uses of ColumnRefs in edu.caltech.nanodb.indexes

Methods in edu.caltech.nanodb.indexes with parameters of type ColumnRefs

Modifier and Type	Method	Description
static Schema	IndexUtils.makeIndexSchema(Schema tableSchema, ColumnRefs indexDesc)	This method takes the schema of a table, and a description of an index, and it builds the schema that the index should have.
static TupleLiteral	IndexUtils.makeTableSearchKey(ColumnRefs columnRefs, Tuple tuple, boolean findExactTuple)	This helper function creates a TupleLiteral that holds the key-values necessary for probing, storing or deleting a tuple in a table's index.

Uses of ColumnRefs in edu.caltech.nanodb.relations

Subclasses of ColumnRefs in edu.caltech.nanodb.relations

Modifier and Type	Class	Description
class	IndexColumnRefs	This class records that there is an index built on a particular set of columns.
class	KeyColumnRefs	This class represents a primary key or other unique key, specifying the indexes of the columns in the key.

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

Modifier and Type	Method	Description
static ColumnRefs	TableUtils.findIndexOnColumns(TableInfo tableInfo, int[] colIndexes)

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

Modifier and Type	Method	Description
boolean	ColumnRefs.equalsColumns(ColumnRefs ci)	Returns true if the specified ColumnIndexes object has the same columns as this object, in the exact same order.
java.util.List<KeyColumnRefs>	Schema.getAllKeysOnColumns(ColumnRefs colRefs)	Returns all candidate-keys from this schema that have the specified set of columns.
KeyColumnRefs	Schema.getKeyOnColumns(ColumnRefs colRefs)	Returns any candidate-key from this schema that has the specified set of columns.
boolean	Schema.hasKeyOnColumns(ColumnRefs colRefs)	Returns true if this schema has a candidate key on the set of columns specified in the argument.
boolean	ColumnRefs.hasSameColumns(ColumnRefs ci)	Returns true if the specified ColumnIndexes object has the same columns as this object, independent of order.