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Standard interfaces implemented throughout the library.
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/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2011, Open Source Geospatial Foundation (OSGeo)
* (C) 2003-2005, Open Geospatial Consortium Inc.
*
* All Rights Reserved. http://www.opengis.org/legal/
*/
package org.opengis.parameter;
import static org.opengis.annotation.Obligation.*;
import static org.opengis.annotation.Specification.*;
import java.net.URI;
import javax.measure.Unit;
import org.opengis.annotation.UML;
/**
* A parameter value used by an operation method. Most parameter values are numeric, but other types
* of parameter values are possible. The parameter type can be fetch with the
* {@linkplain #getValue()}.{@linkplain Object#getClass() getClass()} idiom. The {@link
* #getValue()} and {@link #setValue(Object)} methods can be invoked at any time. Others getters and
* setters are parameter-type dependents.
*
* @param The type of parameter values.
* @version Abstract
* specification 2.0
* @author Martin Desruisseaux (IRD)
* @author Jody Garnett (Refractions Research)
* @since GeoAPI 1.0
* @see ParameterDescriptor
* @see ParameterValueGroup
*/
@UML(identifier = "CC_ParameterValue", specification = ISO_19111)
public interface ParameterValue extends GeneralParameterValue {
/**
* Returns the abstract definition of this parameter value.
*
* @return The abstract definition of this parameter value.
*/
ParameterDescriptor getDescriptor();
/**
* Returns the unit of measure of the {@linkplain #doubleValue() parameter value}. If the
* parameter value has no unit (for example because it is a {@link String} type), then this
* method returns {@code null}. Note that "no unit" doesn't means "dimensionless".
*
* @return The unit of measure of the parameter value.
* @see #doubleValue()
* @see #doubleValueList
* @see #getValue
*/
Unit getUnit();
/**
* Returns the numeric value of the coordinate operation parameter in the specified unit of
* measure. This convenience method applies unit conversion on the fly as needed.
*
* @param unit The unit of measure for the value to be returned.
* @return The numeric value represented by this parameter after conversion to type {@code
* double} and conversion to {@code unit}.
* @throws InvalidParameterTypeException if the value is not a numeric type.
* @throws IllegalArgumentException if the specified unit is invalid for this parameter.
* @see #getUnit
* @see #setValue(double,Unit)
* @see #doubleValueList(Unit)
*/
double doubleValue(Unit unit) throws InvalidParameterTypeException;
/**
* Returns the numeric value of the coordinate operation parameter with its associated
* {@linkplain #getUnit unit of measure}.
*
* @return The numeric value represented by this parameter after conversion to type {@code
* double}.
* @throws InvalidParameterTypeException if the value is not a numeric type.
* @unitof Measure
* @rename Renamed {@code value} to {@code doubleValue} for consistency with {@link
* Number#doubleValue} and the other {@code fooValue} in this interface. Also because {@link
* #getValue} is already used for an {@link Object} type, for consistency with {@link
* #setValue(Object)}.
* @see #getUnit
* @see #setValue(double)
* @see #doubleValueList
*/
@UML(identifier = "value", obligation = CONDITIONAL, specification = ISO_19111)
double doubleValue() throws InvalidParameterTypeException;
/**
* Returns the positive integer value of an operation parameter, usually used for a count. An
* integer value does not have an associated unit of measure.
*
* @return The numeric value represented by this parameter after conversion to type {@code int}.
* @throws InvalidParameterTypeException if the value is not an integer type.
* @rename Renamed {@code integerValue} to {@code intValue} for consistency with {@link
* Number#intValue} and the Java primitive type {@code int}.
* @see #setValue(int)
* @see #intValueList
*/
@UML(identifier = "integerValue", obligation = CONDITIONAL, specification = ISO_19111)
int intValue() throws InvalidParameterTypeException;
/**
* Returns the boolean value of an operation parameter A boolean value does not have an
* associated unit of measure.
*
* @return The boolean value represented by this parameter.
* @throws InvalidParameterTypeException if the value is not a boolean type.
* @see #setValue(boolean)
*/
@UML(identifier = "booleanValue", obligation = CONDITIONAL, specification = ISO_19111)
boolean booleanValue() throws InvalidParameterTypeException;
/**
* Returns the string value of an operation parameter. A string value does not have an
* associated unit of measure.
*
* @return The string value represented by this parameter.
* @throws InvalidParameterTypeException if the value is not a string.
* @see #getValue
* @see #setValue(Object)
*/
@UML(identifier = "stringValue", obligation = CONDITIONAL, specification = ISO_19111)
String stringValue() throws InvalidParameterTypeException;
/**
* Returns an ordered sequence of numeric values in the specified unit of measure. This
* convenience method applies unit conversions on the fly as needed.
*
* @param unit The unit of measure for the value to be returned.
* @return The sequence of values represented by this parameter after conversion to type {@code
* double} and conversion to {@code unit}.
* @throws InvalidParameterTypeException if the value is not an array of {@code double}s.
* @throws IllegalArgumentException if the specified unit is invalid for this parameter.
* @see #getUnit
* @see #setValue(double[],Unit)
* @see #doubleValue(Unit)
*/
double[] doubleValueList(Unit unit) throws InvalidParameterTypeException;
/**
* Returns an ordered sequence of two or more numeric values of an operation parameter list,
* where each value has the same associated {@linkplain Unit unit of measure}.
*
* @return The sequence of values represented by this parameter.
* @throws InvalidParameterTypeException if the value is not an array of {@code double}s.
* @unitof Measure
* @see #getUnit
* @see #setValue(Object)
* @see #doubleValue()
* @rename Renamed {@code valueList} as {@code doubleValueList} for consistency with {@link
* #doubleValue()}. Also because, like {@code doubleValue()}, this method returns a {@code
* double} value rather than a {@code Measure} object.
*/
@UML(identifier = "valueList", obligation = CONDITIONAL, specification = ISO_19111)
double[] doubleValueList() throws InvalidParameterTypeException;
/**
* Returns an ordered sequence of two or more integer values of an operation parameter list,
* usually used for counts. These integer values do not have an associated unit of measure.
*
* @return The sequence of values represented by this parameter.
* @throws InvalidParameterTypeException if the value is not an array of {@code int}s.
* @see #setValue(Object)
* @see #intValue
* @rename Renamed {@code valueList} as {@code doubleValueList} for consistency with {@link
* #doubleValue()}. Also because, like {@code doubleValue()}, this method returns a {@code
* double} value rather than a {@code Measure} object.
*/
@UML(identifier = "integerValueList", obligation = CONDITIONAL, specification = ISO_19111)
int[] intValueList() throws InvalidParameterTypeException;
/**
* Returns a reference to a file or a part of a file containing one or more parameter values.
* When referencing a part of a file, that file must contain multiple identified parts, such as
* an XML encoded document. Furthermore, the referenced file or part of a file can reference
* another part of the same or different files, as allowed in XML documents.
*
* @return The reference to a file containing parameter values.
* @throws InvalidParameterTypeException if the value is not a reference to a file or an URI.
* @see #getValue
* @see #setValue(Object)
*/
@UML(identifier = "valueFile", obligation = CONDITIONAL, specification = ISO_19111)
URI valueFile() throws InvalidParameterTypeException;
/**
* Returns the parameter value as an object. The object type is typically a {@link Double},
* {@link Integer}, {@link Boolean}, {@link String}, {@link URI}, {@code double[]} or {@code
* int[]}.
*
* @return The parameter value as an object.
* @see #setValue(Object)
*/
@UML(identifier = "value", obligation = CONDITIONAL, specification = ISO_19111)
T getValue();
/**
* Sets the parameter value as an array of floating point and their associated unit.
*
* @param values The parameter values.
* @param unit The unit for the specified value.
* @throws InvalidParameterValueException if the floating point type is inappropriate for this
* parameter, or if the value is illegal for some other reason (for example a value out of
* range).
*/
void setValue(double[] values, Unit unit) throws InvalidParameterValueException;
/**
* Sets the parameter value as a floating point and its associated unit.
*
* @param value The parameter value.
* @param unit The unit for the specified value.
* @throws InvalidParameterValueException if the floating point type is inappropriate for this
* parameter, or if the value is illegal for some other reason (for example a value out of
* range).
* @see #setValue(double)
* @see #doubleValue(Unit)
*/
void setValue(double value, Unit unit) throws InvalidParameterValueException;
/**
* Sets the parameter value as a floating point.
*
* @param value The parameter value.
* @throws InvalidParameterValueException if the floating point type is inappropriate for this
* parameter, or if the value is illegal for some other reason (for example a value out of
* range).
* @see #setValue(double,Unit)
* @see #doubleValue()
*/
void setValue(double value) throws InvalidParameterValueException;
/**
* Set the parameter value as an integer.
*
* @param value The parameter value.
* @throws InvalidParameterValueException if the integer type is inappropriate for this
* parameter, or if the value is illegal for some other reason (for example a value out of
* range).
* @see #intValue
*/
void setValue(int value) throws InvalidParameterValueException;
/**
* Set the parameter value as a boolean.
*
* @param value The parameter value.
* @throws InvalidParameterValueException if the boolean type is inappropriate for this
* parameter.
* @see #booleanValue
*/
void setValue(boolean value) throws InvalidParameterValueException;
/**
* Set the parameter value as an object. The object type is typically a {@link Double}, {@link
* Integer}, {@link Boolean}, {@link String}, {@link URI}, {@code double[]} or {@code int[]}.
*
* The argument is not restricted to the parameterized type {@code T} because the type is
* typically unknown (as in group.{@linkplain ParameterValueGroup#parameter
* parameter}("name").setValue(value)) and because some
* implementations may choose to convert a wider range of types.
*
* @param value The parameter value.
* @throws InvalidParameterValueException if the type of {@code value} is inappropriate for this
* parameter, or if the value is illegal for some other reason (for example the value is
* numeric and out of range).
* @see #getValue
*/
void setValue(Object value) throws InvalidParameterValueException;
/**
* Returns a copy of this parameter value.
*
* @return A copy of this parameter value.
*/
ParameterValue clone();
}