org.datanucleus.store.rdbms.sql.expression

Class ArrayExpression

java.lang.Object

org.datanucleus.store.rdbms.sql.expression.SQLExpression

org.datanucleus.store.rdbms.sql.expression.ArrayExpression

Direct Known Subclasses:

ArrayLiteral

public class ArrayExpression
extends SQLExpression

Representation of array expression.

Nested Class Summary

Nested classes/interfaces inherited from class org.datanucleus.store.rdbms.sql.expression.SQLExpression

SQLExpression.ColumnExpressionList

Field Summary

Fields

Modifier and Type	Field and Description
protected List<SQLExpression>	elementExpressions Expressions for all elements in the array.

Fields inherited from class org.datanucleus.store.rdbms.sql.expression.SQLExpression

lowestOperator, mapping, parameterName, st, stmt, subExprs, table

Constructor Summary

Constructors

Constructor and Description
ArrayExpression(SQLStatement stmt, JavaTypeMapping mapping, SQLExpression[] exprs) Constructor for an SQL expression for an array expression specified in the query.
ArrayExpression(SQLStatement stmt, SQLTable table, JavaTypeMapping mapping) Constructor for an SQL expression for a (field) mapping in a specified table.

Method Summary

Modifier and Type	Method and Description
BooleanExpression	eq(SQLExpression expr) Equality operator (equals to)
List<SQLExpression>	getElementExpressions()
SQLExpression	invoke(String methodName, List args) Invocation of a method on this expression.
BooleanExpression	ne(SQLExpression expr) Not equality operator (not equals to)

Methods inherited from class org.datanucleus.store.rdbms.sql.expression.SQLExpression

add, and, cast, com, distinct, div, encloseInParentheses, eor, ge, getJavaTypeMapping, getLowestOperator, getNumberOfSubExpressions, getParameterName, getSQLStatement, getSQLTable, getSubExpression, gt, in, ior, is, isParameter, le, lt, mod, mul, neg, not, setJavaTypeMapping, sub, toSQLText

Methods inherited from class java.lang.Object

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

Field Detail

elementExpressions

protected List<SQLExpression> elementExpressions

Expressions for all elements in the array.

Constructor Detail

ArrayExpression

public ArrayExpression(SQLStatement stmt,
                       SQLTable table,
                       JavaTypeMapping mapping)

Constructor for an SQL expression for a (field) mapping in a specified table.

Parameters:

stmt - The statement

table - The table in the statement

mapping - The mapping for the field

ArrayExpression

public ArrayExpression(SQLStatement stmt,
                       JavaTypeMapping mapping,
                       SQLExpression[] exprs)

Constructor for an SQL expression for an array expression specified in the query.

Parameters:

stmt - The statement

mapping - The mapping for the field

exprs - element expressions

Method Detail

getElementExpressions

public List<SQLExpression> getElementExpressions()

invoke

public SQLExpression invoke(String methodName,
                            List args)

Description copied from class: SQLExpression

Invocation of a method on this expression.

Overrides:

invoke in class SQLExpression

Parameters:

methodName - name of the method to invoke

args - Args to this method (if any)

Returns:

the converted value

eq

public BooleanExpression eq(SQLExpression expr)

Description copied from class: SQLExpression

Equality operator (equals to)

Overrides:

eq in class SQLExpression

Parameters:

expr - the right-hand operand

Returns:

The type of an equality expression is a boolean

ne

public BooleanExpression ne(SQLExpression expr)

Description copied from class: SQLExpression

Not equality operator (not equals to)

Overrides:

ne in class SQLExpression

Parameters:

expr - the right-hand operand

Returns:

The type of an equality expression is a boolean