net.sf.saffron.sql
Class SqlDelete

java.lang.Object
  |
  +--net.sf.saffron.sql.SqlNode
        |
        +--net.sf.saffron.sql.SqlCall
              |
              +--net.sf.saffron.sql.SqlDelete

public class SqlDelete

extends SqlCall

A SqlDelete is a node of a parse tree which represents a DELETE statement.

Nested Class Summary

Nested classes inherited from class net.sf.saffron.sql.SqlNode

SqlNode.DatabaseMetaDataInvocationHandler

Field Summary

static int	CONDITION_OPERAND
static int	OPERAND_COUNT
static int	SOURCE_SELECT_OPERAND
static int	TARGET_TABLE_OPERAND

Fields inherited from class net.sf.saffron.sql.SqlCall

operands, operator

Constructor Summary

SqlDelete(SqlSpecialOperator operator, SqlIdentifier targetTable, SqlNode condition)

Method Summary

SqlCall	getCondition() Get the filter condition for rows to be deleted.
SqlSelect	getSourceSelect() Get the source SELECT expression for the data to be inserted.
SqlIdentifier	getTargetTable() .
void	unparse(SqlWriter writer, int leftPrec, int rightPrec) Writes a SQL representation of this node to a writer.

Methods inherited from class net.sf.saffron.sql.SqlCall

addOperand, clone, getKind, getOperands, isA, setOperand

Methods inherited from class net.sf.saffron.sql.SqlNode

cloneArray, toString, toString

Methods inherited from class java.lang.Object

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

Field Detail

TARGET_TABLE_OPERAND

public static final int TARGET_TABLE_OPERAND

See Also:

Constant Field Values

CONDITION_OPERAND

public static final int CONDITION_OPERAND

See Also:

Constant Field Values

SOURCE_SELECT_OPERAND

public static final int SOURCE_SELECT_OPERAND

See Also:

Constant Field Values

OPERAND_COUNT

public static final int OPERAND_COUNT

See Also:

Constant Field Values

Constructor Detail

SqlDelete

public SqlDelete(SqlSpecialOperator operator,
                 SqlIdentifier targetTable,
                 SqlNode condition)

Method Detail

getTargetTable

public SqlIdentifier getTargetTable()

.

Returns:

the identifier for the target table of the insertion

getSourceSelect

public SqlSelect getSourceSelect()

Get the source SELECT expression for the data to be inserted. It is only safe to call this after the condition has been expanded by SqlValidator.createInternalSelect.

Returns:

the source SELECT for the data to be inserted

getCondition

public SqlCall getCondition()

Get the filter condition for rows to be deleted. It is only safe to call this before the condition has been expanded by SqlValidator.createInternalSelect.

Returns:

the condition expression for the data to be deleted, or null for all rows in the table

unparse

public void unparse(SqlWriter writer,
                    int leftPrec,
                    int rightPrec)

Description copied from class: SqlNode

Writes a SQL representation of this node to a writer.

Overrides:

unparse in class SqlCall