org.apache.olingo.server.api.uri.queryoption.apply

Interface AggregateExpression

public interface AggregateExpression

Represents an aggregate expression.

See Also:

Aggregate

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	AggregateExpression.StandardMethod Standard aggregation method.

Method Summary

Modifier and Type	Method and Description
String	getAlias() Gets the name of the aggregate if an alias name has been set.
FullQualifiedName	getCustomMethod() Gets the name of the custom aggregation method if used.
Expression	getExpression() Gets the common expression to be aggregated.
List<AggregateExpression>	getFrom() Gets the aggregate expressions for from.
AggregateExpression	getInlineAggregateExpression() Gets the inline aggregation expression to be applied to the target of the path if used.
List<UriResource>	getPath() Gets the path prefix and the path segment.
AggregateExpression.StandardMethod	getStandardMethod() Gets the standard aggregation method if used.

Method Detail

getPath

List<UriResource> getPath()

Gets the path prefix and the path segment.

Returns:

a (potentially empty) list of path segments (and never null)

getExpression

Expression getExpression()

Gets the common expression to be aggregated.

Returns:

an Expression that could be null

getStandardMethod

AggregateExpression.StandardMethod getStandardMethod()

Gets the standard aggregation method if used.

Returns:

a AggregateExpression.StandardMethod or null

See Also:

getCustomMethod()

getCustomMethod

FullQualifiedName getCustomMethod()

Gets the name of the custom aggregation method if used.

Returns:

a FullQualifiedName or null

See Also:

getStandardMethod()

getAlias

String getAlias()

Gets the name of the aggregate if an alias name has been set.

Returns:

an identifier String or null

getInlineAggregateExpression

AggregateExpression getInlineAggregateExpression()

Gets the inline aggregation expression to be applied to the target of the path if used.

Returns:

an aggregation expression or null

See Also:

getPath()

getFrom

List<AggregateExpression> getFrom()

Gets the aggregate expressions for from.

Returns:

a (potentially empty) list of aggregate expressions (but never null)