org.apache.derby.impl.sql.compile

Class TableElementList

java.lang.Object

org.apache.derby.impl.sql.compile.QueryTreeNode

org.apache.derby.impl.sql.compile.QueryTreeNodeVector

org.apache.derby.impl.sql.compile.TableElementList

All Implemented Interfaces:

Node, Visitable

public class TableElementList
extends QueryTreeNodeVector

A TableElementList represents the list of columns and other table elements such as constraints in a CREATE TABLE or ALTER TABLE statement.

Field Summary

Fields

Modifier and Type	Field and Description
private int	numColumns
private TableDescriptor	td

Fields inherited from class org.apache.derby.impl.sql.compile.QueryTreeNode

AUTOINCREMENT_CREATE_MODIFY, AUTOINCREMENT_INC_INDEX, AUTOINCREMENT_IS_AUTOINCREMENT_INDEX, AUTOINCREMENT_START_INDEX

Constructor Summary

Constructors

Constructor and Description
TableElementList()

Method Summary

Methods

Modifier and Type	Method and Description
void	addTableElement(TableElementNode tableElement) Add a TableElementNode to this TableElementList
void	appendNewColumnsToRCL(FromBaseTable table) Append goobered up ResultColumns to the table's RCL.
private boolean	areColumnsNullable(ConstraintDefinitionNode cdn, TableDescriptor td) Checks if any of the columns in the constraint can be null.
(package private) void	bindAndValidateCheckConstraints(FromList fromList) Bind and validate all of the check constraints in this list against the specified FromList.
(package private) void	bindAndValidateGenerationClauses(SchemaDescriptor sd, FromList fromList, FormatableBitSet generatedColumns, TableDescriptor baseTable) Bind and validate all of the generation clauses in this list against the specified FromList.
private void	checkForDuplicateColumns(DDLStatementNode ddlStmt, java.util.Set seenNames, java.lang.String colName) Check to make sure that there are no duplicate column names in the list.
private void	checkForDuplicateConstraintNames(DDLStatementNode ddlStmt, java.util.Set seenNames, java.lang.String constraintName) Check to make sure that there are no duplicate constraint names in the list.
private void	checkForNullColumns(ConstraintDefinitionNode cdn, TableDescriptor td)
private java.util.Properties	checkIndexPageSizeProperty(ConstraintDefinitionNode cdn) Checks if the index should use a larger page size.
private boolean	columnsMatch(java.lang.String[] columnNames1, java.lang.String[] columnNames2)
boolean	containsColumnName(java.lang.String colName) Determine whether or not the parameter matches a column name in this list.
int	countConstraints(int constraintType) Count the number of constraints of the specified type.
int	countGenerationClauses() Count the number of generation clauses.
int	countNumberOfColumns() Count the number of columns.
private ColumnDefinitionNode	findColumnDefinition(java.lang.String colName) Find the column definition node in this list that matches the passed in column name.
(package private) void	findIllegalGenerationReferences(FromList fromList, TableDescriptor baseTable) Complain if a generation clause references other generated columns.
int	genColumnInfos(ColumnInfo[] colInfos) Fill in the ColumnInfo[] for this table element list.
(package private) void	genConstraintActions(boolean forCreateTable, ConstraintConstantAction[] conActions, java.lang.String tableName, SchemaDescriptor tableSd, DataDictionary dd) Fill in the ConstraintConstantAction[] for this create/alter table.
private IndexConstantAction	genIndexAction(boolean forCreateTable, boolean isUnique, boolean isUniqueWithDuplicateNulls, java.lang.String indexName, ConstraintDefinitionNode cdn, java.lang.String[] columnNames, boolean isConstraint, SchemaDescriptor sd, java.lang.String tableName, int constraintType, DataDictionary dd) utility to generated the call to create the index.
private DataTypeDescriptor	getColumnDataTypeDescriptor(java.lang.String colName)
private DataTypeDescriptor	getColumnDataTypeDescriptor(java.lang.String colName, TableDescriptor td)
(package private) void	setCollationTypeOnCharacterStringColumn(SchemaDescriptor sd, ColumnDefinitionNode cdn) Use the passed schema descriptor's collation type to set the collation of a character string column.
(package private) void	setCollationTypesOnCharacterStringColumns(SchemaDescriptor sd) Use the passed schema descriptor's collation type to set the collation of the character string types in create table node
private void	setColumnListToNotNull(ConstraintDefinitionNode cdn) Set all columns in that appear in a PRIMARY KEY constraint in a CREATE TABLE statement to NOT NULL.
(package private) void	validate(DDLStatementNode ddlStmt, DataDictionary dd, TableDescriptor td) Validate this TableElementList.
(package private) void	validateForeignKeysOnGenerationClauses(FromList fromList, FormatableBitSet generatedColumns) Prevent foreign keys on generated columns from violating the SQL spec, part 2, section 11.8 (), syntax rule 12: the referential action may not specify SET NULL or SET DEFAULT and the update rule may not specify ON UPDATE CASCADE.
void	validatePrimaryKeyNullability() Validate nullability of primary keys.
private void	verifyUniqueColumnList(DDLStatementNode ddlStmt, ConstraintDefinitionNode cdn) Verify that a primary/unique table constraint has a valid column list.

Methods inherited from class org.apache.derby.impl.sql.compile.QueryTreeNodeVector

acceptChildren, addElement, destructiveAppend, elementAt, indexOf, insertElementAt, nondestructiveAppend, printSubNodes, remove, removeAllElements, removeElement, removeElementAt, setElementAt, size

Methods inherited from class org.apache.derby.impl.sql.compile.QueryTreeNode

accept, bindOffsetFetch, bindRowMultiSet, bindUserCatalogType, bindUserType, checkReliability, checkReliability, convertDefaultNode, createTypeDependency, debugFlush, debugPrint, disablePrivilegeCollection, formatNodeString, foundString, generate, generateAuthorizeCheck, getBeginOffset, getClassFactory, getCompilerContext, getContextManager, getCursorInfo, getDataDictionary, getDependencyManager, getEndOffset, getExecutionFactory, getGenericConstantActionFactory, getIntProperty, getLanguageConnectionContext, getNodeFactory, getNodeType, getNullNode, getParameterTypes, getSchemaDescriptor, getSchemaDescriptor, getStatementType, getTableDescriptor, getTypeCompiler, init, init, init, init, init, init, init, init, init, init, init, init, init, init, isAtomic, isInstanceOf, isPrivilegeCollectionRequired, isSessionSchema, isSessionSchema, makeConstantAction, makeTableName, makeTableName, nodeHeader, orReliability, parseStatement, printLabel, referencesSessionSchema, resolveTableToSynonym, setBeginOffset, setContextManager, setEndOffset, setNodeType, setRefActionInfo, stackPrint, toString, treePrint, treePrint, verifyClassExist

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

numColumns

private int numColumns

td

private TableDescriptor td

Constructor Detail

TableElementList

public TableElementList()

Method Detail

addTableElement

public void addTableElement(TableElementNode tableElement)

Add a TableElementNode to this TableElementList

Parameters:

tableElement - The TableElementNode to add to this list

setCollationTypesOnCharacterStringColumns

void setCollationTypesOnCharacterStringColumns(SchemaDescriptor sd)
                                         throws StandardException

Use the passed schema descriptor's collation type to set the collation of the character string types in create table node

Parameters:

sd -

Throws:

StandardException

setCollationTypeOnCharacterStringColumn

void setCollationTypeOnCharacterStringColumn(SchemaDescriptor sd,
                                           ColumnDefinitionNode cdn)
                                       throws StandardException

Use the passed schema descriptor's collation type to set the collation of a character string column.

Parameters:

sd -

Throws:

StandardException

validate

void validate(DDLStatementNode ddlStmt,
            DataDictionary dd,
            TableDescriptor td)
        throws StandardException

Validate this TableElementList. This includes checking for duplicate columns names, and checking that user types really exist.

Parameters:

ddlStmt - DDLStatementNode which contains this list

dd - DataDictionary to use

td - TableDescriptor for table, if existing table.

Throws:

StandardException - Thrown on error

validatePrimaryKeyNullability

public void validatePrimaryKeyNullability()
                                   throws StandardException

Validate nullability of primary keys. This logic was moved out of the main validate method so that it can be called after binding generation clauses. We need to perform the nullability checks later on because the datatype may be omitted on the generation clause--we can't set/vet the nullability of the datatype until we determine what the datatype is.

Throws:

StandardException

countConstraints

public int countConstraints(int constraintType)

Count the number of constraints of the specified type.

Parameters:

constraintType - The constraint type to search for.

Returns:

int The number of constraints of the specified type.

countGenerationClauses

public int countGenerationClauses()

Count the number of generation clauses.

countNumberOfColumns

public int countNumberOfColumns()

Count the number of columns.

Returns:

int The number of columns.

genColumnInfos

public int genColumnInfos(ColumnInfo[] colInfos)
                   throws StandardException

Fill in the ColumnInfo[] for this table element list.

Parameters:

colInfos - The ColumnInfo[] to be filled in.

Returns:

int The number of constraints in the create table.

Throws:

StandardException

appendNewColumnsToRCL

public void appendNewColumnsToRCL(FromBaseTable table)
                           throws StandardException

Append goobered up ResultColumns to the table's RCL. This is useful for binding check constraints for CREATE and ALTER TABLE.

Parameters:

table - The table in question.

Throws:

StandardException - Thrown on error

bindAndValidateCheckConstraints

void bindAndValidateCheckConstraints(FromList fromList)
                               throws StandardException

Bind and validate all of the check constraints in this list against the specified FromList.

Parameters:

fromList - The FromList in question.

Throws:

StandardException - Thrown on error

bindAndValidateGenerationClauses

void bindAndValidateGenerationClauses(SchemaDescriptor sd,
                                    FromList fromList,
                                    FormatableBitSet generatedColumns,
                                    TableDescriptor baseTable)
                                throws StandardException

Bind and validate all of the generation clauses in this list against the specified FromList.

Parameters:

sd - Schema where the table lives.

fromList - The FromList in question.

generatedColumns - Bitmap of generated columns in the table. Vacuous for CREATE TABLE, but may be non-trivial for ALTER TABLE. This routine may set bits for new generated columns.

baseTable - Table descriptor if this is an ALTER TABLE statement.

Throws:

StandardException - Thrown on error

findIllegalGenerationReferences

void findIllegalGenerationReferences(FromList fromList,
                                   TableDescriptor baseTable)
                               throws StandardException

Complain if a generation clause references other generated columns. This is required by the SQL Standard, part 2, section 4.14.8.

Parameters:

fromList - The FromList in question.

baseTable - Table descriptor if this is an ALTER TABLE statement.

Throws:

StandardException - Thrown on error

validateForeignKeysOnGenerationClauses

void validateForeignKeysOnGenerationClauses(FromList fromList,
                                          FormatableBitSet generatedColumns)
                                      throws StandardException

Prevent foreign keys on generated columns from violating the SQL spec, part 2, section 11.8 (), syntax rule 12: the referential action may not specify SET NULL or SET DEFAULT and the update rule may not specify ON UPDATE CASCADE.

Parameters:

fromList - The FromList in question.

generatedColumns - Bitmap of generated columns in the table.

Throws:

StandardException - Thrown on error

genConstraintActions

void genConstraintActions(boolean forCreateTable,
                        ConstraintConstantAction[] conActions,
                        java.lang.String tableName,
                        SchemaDescriptor tableSd,
                        DataDictionary dd)
                    throws StandardException

Fill in the ConstraintConstantAction[] for this create/alter table.

Parameters:

forCreateTable - ConstraintConstantAction is for a create table.

conActions - The ConstraintConstantAction[] to be filled in.

tableName - The name of the Table being created.

tableSd - The schema for that table.

dd - The DataDictionary

Throws:

StandardException - Thrown on failure

columnsMatch

private boolean columnsMatch(java.lang.String[] columnNames1,
                   java.lang.String[] columnNames2)

genIndexAction

private IndexConstantAction genIndexAction(boolean forCreateTable,
                                 boolean isUnique,
                                 boolean isUniqueWithDuplicateNulls,
                                 java.lang.String indexName,
                                 ConstraintDefinitionNode cdn,
                                 java.lang.String[] columnNames,
                                 boolean isConstraint,
                                 SchemaDescriptor sd,
                                 java.lang.String tableName,
                                 int constraintType,
                                 DataDictionary dd)
                                    throws StandardException

utility to generated the call to create the index.

Parameters:

forCreateTable - Executed as part of a CREATE TABLE

isUnique - True means it will be a unique index

isUniqueWithDuplicateNulls - True means index check and disallow any duplicate key if key has no column with a null value. If any column in the key has a null value, no checking is done and insert will always succeed.

indexName - The type of index (BTREE, for example)

cdn -

columnNames - Names of the columns in the index, in order.

isConstraint - TRUE if index is backing up a constraint, else FALSE.

sd -

tableName - Name of table the index will be on

constraintType -

dd -

Throws:

StandardException

checkIndexPageSizeProperty

private java.util.Properties checkIndexPageSizeProperty(ConstraintDefinitionNode cdn)
                                                 throws StandardException

Checks if the index should use a larger page size. If the columns in the index are large, and if the user hasn't already specified a page size to use, then we may need to default to the large page size in order to get an index with sufficiently large pages. For example, this DDL should use a larger page size for the index that backs the PRIMARY KEY constraint: create table t (x varchar(1000) primary key)

Parameters:

cdn - Constraint node

Returns:

properties to use for creating the index

Throws:

StandardException

checkForDuplicateColumns

private void checkForDuplicateColumns(DDLStatementNode ddlStmt,
                            java.util.Set seenNames,
                            java.lang.String colName)
                               throws StandardException

Check to make sure that there are no duplicate column names in the list. (The comparison here is case sensitive. The work of converting column names that are not quoted identifiers to upper case is handled by the parser.) RESOLVE: This check will also be performed by alter table.

Parameters:

ddlStmt - DDLStatementNode which contains this list

seenNames - The column names seen so far (for enforcing uniqueness)

colName - Column name to check for.

Throws:

StandardException - Thrown on error

checkForDuplicateConstraintNames

private void checkForDuplicateConstraintNames(DDLStatementNode ddlStmt,
                                    java.util.Set seenNames,
                                    java.lang.String constraintName)
                                       throws StandardException

Check to make sure that there are no duplicate constraint names in the list. (The comparison here is case sensitive. The work of converting column names that are not quoted identifiers to upper case is handled by the parser.) RESOLVE: This check will also be performed by alter table.

Parameters:

ddlStmt - DDLStatementNode which contains this list

seenNames - The constraint names seen so far (for enforcing uniqueness)

Throws:

StandardException - Thrown on error

verifyUniqueColumnList

private void verifyUniqueColumnList(DDLStatementNode ddlStmt,
                          ConstraintDefinitionNode cdn)
                             throws StandardException

Verify that a primary/unique table constraint has a valid column list. (All columns in table and no duplicates.)

Parameters:

ddlStmt - The outer DDLStatementNode

cdn - The ConstraintDefinitionNode

Throws:

StandardException - Thrown if the column list is invalid

setColumnListToNotNull

private void setColumnListToNotNull(ConstraintDefinitionNode cdn)

Set all columns in that appear in a PRIMARY KEY constraint in a CREATE TABLE statement to NOT NULL.

Parameters:

cdn - The ConstraintDefinitionNode for a PRIMARY KEY constraint

areColumnsNullable

private boolean areColumnsNullable(ConstraintDefinitionNode cdn,
                         TableDescriptor td)

Checks if any of the columns in the constraint can be null.

Parameters:

cdn - Constraint node

td - tabe descriptor of the target table

Returns:

true if any of the column can be null false other wise

checkForNullColumns

private void checkForNullColumns(ConstraintDefinitionNode cdn,
                       TableDescriptor td)
                          throws StandardException

Throws:

StandardException

getColumnDataTypeDescriptor

private DataTypeDescriptor getColumnDataTypeDescriptor(java.lang.String colName)

getColumnDataTypeDescriptor

private DataTypeDescriptor getColumnDataTypeDescriptor(java.lang.String colName,
                                             TableDescriptor td)

findColumnDefinition

private ColumnDefinitionNode findColumnDefinition(java.lang.String colName)

Find the column definition node in this list that matches the passed in column name.

Parameters:

colName -

Returns:

Reference to column definition node or null if the column is not in the list.

containsColumnName

public boolean containsColumnName(java.lang.String colName)

Determine whether or not the parameter matches a column name in this list.

Parameters:

colName - The column name to search for.

Returns:

boolean Whether or not a match is found.