Package com.attivio.sdk.search.fields

Class AggregateExpression

java.lang.Object

com.attivio.sdk.search.fields.FieldExpression

com.attivio.sdk.search.fields.UnaryFieldExpression

com.attivio.sdk.search.fields.AggregateExpression

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable

public class AggregateExpression
extends UnaryFieldExpression

Expressions for transforming a set of values produced by an underlayinng FieldExpression.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	AggregateExpression.Method	Aggregation method available.

Nested classes/interfaces inherited from class com.attivio.sdk.search.fields.FieldExpression

FieldExpression.StringMode

Field Summary

Fields inherited from class com.attivio.sdk.search.fields.UnaryFieldExpression

expression

Fields inherited from class com.attivio.sdk.search.fields.FieldExpression

EMPTY_ARRAY

Constructor Summary

Constructors

Constructor	Description
AggregateExpression(AggregateExpression.Method method, FieldExpression expression)	Construct a new AggregateExpression to apply to a FieldExpression.
AggregateExpression(AggregateExpression.Method method, java.lang.String fieldName)	Construct a new AggregateExpression to apply to a field.

Method Summary

Modifier and Type	Method	Description
AggregateExpression	clone()
protected AggregateExpression	clone(FieldExpression e)	Create a new instance of this FieldExpression, with a different argument.
boolean	equals(java.lang.Object other)
AggregateExpression.Method	getMethod()	Get the aggregatation method to use.
SchemaField.Type	getType(Schema schema)	Resolve the type for this expression.
int	hashCode()
boolean	isConstant()	Returns true if this field expression evaluates to a constant value.
protected void	toString(java.lang.StringBuilder buffer, FieldExpression.StringMode mode)	Writes the string representation of this field expression to buffer.

Methods inherited from class com.attivio.sdk.search.fields.UnaryFieldExpression

forEachField, getExpression, getFieldName, hasChildren, rewrite, setExpression

Methods inherited from class com.attivio.sdk.search.fields.FieldExpression

apply, copyOf, forEachPhrase, forEachQuery, getDefaultName, isConstant, parse, quote, rewrite, rewriteChildren, toString, toString, valueOf

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

AggregateExpression

public AggregateExpression(AggregateExpression.Method method,
                           java.lang.String fieldName)

Construct a new AggregateExpression to apply to a field.

AggregateExpression

public AggregateExpression(AggregateExpression.Method method,
                           FieldExpression expression)

Construct a new AggregateExpression to apply to a FieldExpression.

Method Detail

isConstant

public boolean isConstant()

Returns true if this field expression evaluates to a constant value.

Overrides:

isConstant in class UnaryFieldExpression

getType

public SchemaField.Type getType(Schema schema)

Resolve the type for this expression.

Specified by:

getType in class FieldExpression

getMethod

public AggregateExpression.Method getMethod()

Get the aggregatation method to use.

toString

protected void toString(java.lang.StringBuilder buffer,
                        FieldExpression.StringMode mode)

Writes the string representation of this field expression to buffer.

Specified by:

toString in class FieldExpression

equals

public boolean equals(java.lang.Object other)

Overrides:

equals in class UnaryFieldExpression

hashCode

public int hashCode()

Overrides:

hashCode in class UnaryFieldExpression

clone

public AggregateExpression clone()

Overrides:

clone in class UnaryFieldExpression

clone

protected AggregateExpression clone(FieldExpression e)

Create a new instance of this FieldExpression, with a different argument.

Overrides:

clone in class UnaryFieldExpression