org.gcube.data.analysis.tabulardata.expression

Class Expression

java.lang.Object

org.gcube.data.analysis.tabulardata.expression.Expression

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

CompositeExpression, LeafExpression

public abstract class Expression
extends Object
implements Serializable

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
Expression()

Method Summary

Methods

Modifier and Type	Method and Description
Object	clone()
static List<Operator>	getAppliableOperators(DataType type)
static List<Class<? extends Expression>>	getExpressionsByCategory(Class<? extends ExpressionCategory> category)
abstract List<Expression>	getLeavesByType(Class<? extends LeafExpression> type)
abstract DataType	getReturnedDataType() Validates the returned data type of the Expression.
abstract void	validate() Validates correctness of the Expression

Methods inherited from class java.lang.Object

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

Constructor Detail

Expression

public Expression()

Method Detail

validate

public abstract void validate()
                       throws MalformedExpressionException

Validates correctness of the Expression

Throws:

MalformedExpressionException

getReturnedDataType

public abstract DataType getReturnedDataType()
                                      throws NotEvaluableDataTypeException

Validates the returned data type of the Expression. Invalid expression may return a wrong datatype

Returns:

Throws:

MalformedExpressionException

NotEvaluableDataTypeException

clone

public Object clone()

Overrides:

clone in class Object

getAppliableOperators

public static final List<Operator> getAppliableOperators(DataType type)
                                                  throws InstantiationException,
                                                         IllegalAccessException,
                                                         IllegalArgumentException,
                                                         InvocationTargetException,
                                                         NoSuchMethodException,
                                                         SecurityException

Throws:

InstantiationException

IllegalAccessException

IllegalArgumentException

InvocationTargetException

NoSuchMethodException

SecurityException

getLeavesByType

public abstract List<Expression> getLeavesByType(Class<? extends LeafExpression> type)

getExpressionsByCategory

public static final List<Class<? extends Expression>> getExpressionsByCategory(Class<? extends ExpressionCategory> category)