Serialized Form

Package edu.caltech.nanodb.commands

Class edu.caltech.nanodb.commands.ExecutionException extends NanoDBException implements Serializable

Package edu.caltech.nanodb.expressions

Class edu.caltech.nanodb.expressions.DivideByZeroException extends ExpressionException implements Serializable

Class edu.caltech.nanodb.expressions.ExpressionException extends NanoDBException implements Serializable

Class edu.caltech.nanodb.expressions.TruncationException extends TypeCastException implements Serializable

Class edu.caltech.nanodb.expressions.TupleLiteral extends java.lang.Object implements Serializable

Serialized Fields

storageSize

int storageSize

The cached storage size of the tuple literal in bytes, or -1 if the size has not been computed and cached.

values

java.util.ArrayList<java.lang.Object> values

The actual values of the columns in the tuple.

Class edu.caltech.nanodb.expressions.TypeCastException extends ExpressionException implements Serializable

Package edu.caltech.nanodb.indexes

Class edu.caltech.nanodb.indexes.IndexException extends StorageException implements Serializable

Package edu.caltech.nanodb.queryeval

Class edu.caltech.nanodb.queryeval.InvalidSQLException extends NanoDBException implements Serializable

Package edu.caltech.nanodb.relations

Class edu.caltech.nanodb.relations.ColumnInfo extends java.lang.Object implements Serializable

Serialized Fields

name

java.lang.String name

The name of the attribute.

tableName

java.lang.String tableName

An optional table-name for the attribute, in cases where a join or Cartesian product generates a result with duplicate attribute-names. In most cases it is expected that this table-name will be null.

type

ColumnType type

The type information for the column.

Class edu.caltech.nanodb.relations.ColumnType extends java.lang.Object implements Serializable

Serialized Fields

baseType

SQLDataType baseType

The base SQL data-type for the attribute.

length

int length

For CHAR and VARCHAR attributes, this contains the length (or maximum length) of the character-sequence. This value must be at least 1; zero and negative values are invalid.

This value is required in CHAR and VARCHAR attribute-declarations, but we default to a length of 1 here.

precision

int precision

For NUMERIC attributes, this contains the precision of the number, or the total number of significant digits in the number.

The default precision value used is ColumnType.DEFAULT_PRECISION.

scale

int scale

For NUMERIC attributes, this contains the scale of the number, or the number of significant digits that are to the right of the decimal place.

The SQL Standard says that the default scale should be zero, which although this seems a bit useless, that's what we do.

Class edu.caltech.nanodb.relations.ConstraintViolationException extends NanoDBException implements Serializable

Class edu.caltech.nanodb.relations.Schema extends java.lang.Object implements Serializable

Serialized Fields

candidateKeys

java.util.ArrayList<KeyColumnRefs> candidateKeys

A collection of all candidate-key objects specifying the sets of columns that comprise candidate keys on this table. One of these keys may be specified as the primary key.

colsHashedByColumn

java.util.HashMap<java.lang.String,java.util.ArrayList<Schema.IndexedColumnInfo>> colsHashedByColumn

A mapping that provides fast lookups for columns based only on column name. Because multiple columns could have the same column name (but different table names) in a single schema, the values in the mapping are lists.

colsHashedByTable

java.util.HashMap<java.lang.String,java.util.HashMap<java.lang.String,Schema.IndexedColumnInfo>> colsHashedByTable

A mapping that provides fast lookups for columns based on table name and column name. The outer hash-map has table names for keys; "no table" is indicated with a null key, which HashMap supports. The inner hash-map has column names for keys, and maps to column information objects.

columnInfos

java.util.ArrayList<ColumnInfo> columnInfos

The collection of the column-info objects describing the columns in the schema.

foreignKeys

java.util.ArrayList<ForeignKeyColumnRefs> foreignKeys

A collection of foreign-key objects specifying other tables that this table references.

indexes

java.util.HashMap<java.lang.String,IndexColumnRefs> indexes

This collection provides easy access to all the indexes defined on this table, including those for candidate keys and the primary key.

notNullCols

java.util.HashSet<java.lang.Integer> notNullCols

A set recording the indexes of the columns have NOT NULL constraints on them.

referencingTables

java.util.HashSet<java.lang.String> referencingTables

A set of the tables that reference this table.

Class edu.caltech.nanodb.relations.SchemaNameException extends NanoDBException implements Serializable

Package edu.caltech.nanodb.server

Class edu.caltech.nanodb.server.CommandResult extends java.lang.Object implements Serializable

Serialized Fields

endTimestamp

long endTimestamp

The system time when command execution ended.

exitCommand

boolean exitCommand

A flag recording whether the command was an exit command or not.

failure

java.lang.Exception failure

If a failure occurs while a command is being executed, this will be the exception that indicated the failure.

firstResultTimestamp

long firstResultTimestamp

The time to the first result being produced.

schema

Schema schema

If the command was a SELECT query and the results are to be kept, this will be the schema of the results as computed by the database.

startTimestamp

long startTimestamp

The system time when command execution started.

tuples

java.util.ArrayList<TupleLiteral> tuples

If the command was a SELECT query and the results are to be kept, this will be a collection of the tuples in the order they were produced by the database.

Class edu.caltech.nanodb.server.EventDispatchException extends NanoDBException implements Serializable

Class edu.caltech.nanodb.server.NanoDBException extends java.lang.RuntimeException implements Serializable

Package edu.caltech.nanodb.server.properties

Class edu.caltech.nanodb.server.properties.PropertyException extends NanoDBException implements Serializable

Package edu.caltech.nanodb.storage

Class edu.caltech.nanodb.storage.DataFormatException extends StorageException implements Serializable

Class edu.caltech.nanodb.storage.FileSystemException extends StorageException implements Serializable

Class edu.caltech.nanodb.storage.InvalidFilePointerException extends StorageException implements Serializable

Class edu.caltech.nanodb.storage.StorageException extends NanoDBException implements Serializable

Class edu.caltech.nanodb.storage.TableException extends StorageException implements Serializable

Class edu.caltech.nanodb.storage.TupleFileException extends StorageException implements Serializable

Package edu.caltech.nanodb.storage.writeahead

Class edu.caltech.nanodb.storage.writeahead.WALFileException extends java.io.IOException implements Serializable

Package edu.caltech.nanodb.transactions

Class edu.caltech.nanodb.transactions.TransactionException extends NanoDBException implements Serializable