Package org.h2.command.ddl

Class AlterTableAlterColumn

  • public class AlterTableAlterColumn
extends CommandWithColumns
    This class represents the statements ALTER TABLE ADD, ALTER TABLE ADD IF NOT EXISTS, ALTER TABLE ALTER COLUMN, ALTER TABLE ALTER COLUMN SELECTIVITY, ALTER TABLE ALTER COLUMN SET DEFAULT, ALTER TABLE ALTER COLUMN DROP DEFAULT, ALTER TABLE ALTER COLUMN DROP EXPRESSION, ALTER TABLE ALTER COLUMN SET NULL, ALTER TABLE ALTER COLUMN DROP NULL, ALTER TABLE ALTER COLUMN SET VISIBLE, ALTER TABLE ALTER COLUMN SET INVISIBLE, ALTER TABLE DROP COLUMN

    • Field Detail

      • tableName

        private java.lang.String tableName

      • oldColumn

        private Column oldColumn

      • newColumn

        private Column newColumn

      • type

        private int type

      • defaultExpression

        private Expression defaultExpression
        Default or on update expression.

      • newSelectivity

        private Expression newSelectivity

      • usingExpression

        private Expression usingExpression

      • addFirst

        private boolean addFirst

      • addBefore

        private java.lang.String addBefore

      • addAfter

        private java.lang.String addAfter

      • ifTableExists

        private boolean ifTableExists

      • ifNotExists

        private boolean ifNotExists

      • columnsToAdd

        private java.util.ArrayList<Column> columnsToAdd

      • columnsToRemove

        private java.util.ArrayList<Column> columnsToRemove

      • booleanFlag

        private boolean booleanFlag

    • Constructor Detail

      • AlterTableAlterColumn

        public AlterTableAlterColumn​(SessionLocal session,
                             Schema schema)

    • Method Detail

      • setIfTableExists

        public void setIfTableExists​(boolean b)

      • setTableName

        public void setTableName​(java.lang.String tableName)

      • setOldColumn

        public void setOldColumn​(Column oldColumn)

      • setAddFirst

        public void setAddFirst()
        Add the column as the first column of the table.

      • setAddBefore

        public void setAddBefore​(java.lang.String before)

      • setAddAfter

        public void setAddAfter​(java.lang.String after)

      • update

        public long update()
        Description copied from class: Prepared
        Execute the statement.
        Overrides:
        update in class Prepared
        Returns:
        the update count

      • checkDefaultReferencesTable

        private static void checkDefaultReferencesTable​(Table table,
                                                Expression defaultExpression)

      • checkClustering

        private void checkClustering​(Column c)

      • convertIdentityColumn

        private void convertIdentityColumn​(Table table,
                                   Column c)

      • removeSequence

        private void removeSequence​(Table table,
                            Sequence sequence)

      • copyData

        private void copyData​(Table table,
                      java.util.ArrayList<Sequence> sequences,
                      boolean createConstraints)

      • cloneTableStructure

        private Table cloneTableStructure​(Table table,
                                  Column[] columns,
                                  Database db,
                                  java.lang.String tempName,
                                  java.util.ArrayList<Column> newColumns)

      • addColumn

        private static java.lang.StringBuilder addColumn​(Column column,
                                                 java.lang.StringBuilder columnNames,
                                                 java.lang.StringBuilder columnValues)

      • checkViews

        private void checkViews​(SchemaObject sourceTable,
                        SchemaObject newTable)
        Check that all views and other dependent objects.

      • checkViewsAreValid

        private void checkViewsAreValid​(DbObject tableOrView)
        Check that a table or view is still valid.
        Parameters:
        tableOrView - the table or view to check

      • execute

        private void execute​(java.lang.String sql)

      • checkNullable

        private void checkNullable​(Table table)

      • checkNoNullValues

        private void checkNoNullValues​(Table table)

      • setType

        public void setType​(int type)

      • setSelectivity

        public void setSelectivity​(Expression selectivity)

      • setDefaultExpression

        public void setDefaultExpression​(Expression defaultExpression)
        Set default or on update expression.
        Parameters:
        defaultExpression - default or on update expression

      • setUsingExpression

        public void setUsingExpression​(Expression usingExpression)
        Set using expression.
        Parameters:
        usingExpression - using expression

      • setNewColumn

        public void setNewColumn​(Column newColumn)

      • getType

        public int getType()
        Description copied from class: Prepared
        Get the command type as defined in CommandInterface
        Specified by:
        getType in class Prepared
        Returns:
        the statement type

      • setIfNotExists

        public void setIfNotExists​(boolean ifNotExists)

      • setColumnsToRemove

        public void setColumnsToRemove​(java.util.ArrayList<Column> columnsToRemove)

      • setBooleanFlag

        public void setBooleanFlag​(boolean booleanFlag)