zserio.ast

Class SqlConstraint

java.lang.Object

zserio.ast.AstNodeBase

zserio.ast.SqlConstraint

All Implemented Interfaces:

AstNode

public final class SqlConstraint
extends AstNodeBase

AST node for SQL constraints.

Constructor Summary

Constructors

Constructor and Description
SqlConstraint(AstLocation location, Expression constraintExpr) Constructor.

Method Summary

Modifier and Type	Method and Description
void	accept(ZserioAstVisitor visitor) Accept zserio visitor.
Expression	getConstraintExpr() Gets original SQL constraint expression.
java.util.List<java.lang.String>	getPrimaryKeyColumnNames() Gets list of primary key column names specified by this constraint.
java.util.List<java.lang.String>	getUniqueColumnNames() Gets list of unique column names specified by this constraint.
static boolean	isNullAllowed(SqlConstraint sqlConstraint) Indicates if the SQL constraint allows 'NULL' value.
boolean	isPrimaryKey() Indicates if the SQL constraint contains 'PRIMARY KEY'.
void	visitChildren(ZserioAstVisitor visitor) Visit children of the current AST node using given visitor.

Methods inherited from class zserio.ast.AstNodeBase

getLocation

Methods inherited from class java.lang.Object

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

Constructor Detail

SqlConstraint

public SqlConstraint(AstLocation location,
                     Expression constraintExpr)

Constructor.

Parameters:

location - AST node location.

constraintExpr - Constraint expression.

Method Detail

accept

public void accept(ZserioAstVisitor visitor)

Description copied from interface: AstNode

Accept zserio visitor.

Parameters:

visitor - Visitor to accept.

visitChildren

public void visitChildren(ZserioAstVisitor visitor)

Description copied from interface: AstNode

Visit children of the current AST node using given visitor.

Specified by:

visitChildren in interface AstNode

Overrides:

visitChildren in class AstNodeBase

Parameters:

visitor - Visitor to use.

getConstraintExpr

public Expression getConstraintExpr()

Gets original SQL constraint expression.

Returns:

Original SQL constraint expression as has been specified in the Zserio.

isPrimaryKey

public boolean isPrimaryKey()

Indicates if the SQL constraint contains 'PRIMARY KEY'.

Returns:

true if this SQL constraint contains 'PRIMARY KEY'.

getPrimaryKeyColumnNames

public java.util.List<java.lang.String> getPrimaryKeyColumnNames()

Gets list of primary key column names specified by this constraint.

Returns:

List of primary key column names.

getUniqueColumnNames

public java.util.List<java.lang.String> getUniqueColumnNames()

Gets list of unique column names specified by this constraint.

Returns:

List of unique column names.

isNullAllowed

public static boolean isNullAllowed(SqlConstraint sqlConstraint)

Indicates if the SQL constraint allows 'NULL' value. By default, no SQL constraint means that 'NULL' value is allowed.

Parameters:

sqlConstraint - SQL constraint.

Returns:

True if the SQL constraint allows 'NULL' value.