svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.dal / org.gvsig.fmap.dal.api / src / main / java / org / gvsig / fmap / dal / feature / FeatureAttributeDescriptor.java @ 44678
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/**
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* gvSIG. Desktop Geographic Information System.
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*
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* Copyright (C) 2007-2013 gvSIG Association.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 3
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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* For any additional information, do not hesitate to contact us
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* at info AT gvsig.com, or visit our website www.gvsig.com.
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*/
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package org.gvsig.fmap.dal.feature; |
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import java.math.MathContext; |
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import java.text.DateFormat; |
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import java.util.Locale; |
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import org.cresques.cts.IProjection; |
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import org.gvsig.fmap.dal.DataTypes; |
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import org.gvsig.fmap.geom.Geometry; |
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import org.gvsig.fmap.geom.type.GeometryType; |
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import org.gvsig.timesupport.Interval; |
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import org.gvsig.tools.dataTypes.Coercion; |
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import org.gvsig.tools.dynobject.DynField_v2; |
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import org.gvsig.tools.evaluator.Evaluator; |
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import org.gvsig.tools.util.LabeledValue; |
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import org.gvsig.tools.dataTypes.CoercionContext; |
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/**
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* A feature attribute descriptor contains information about one of the
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* attributes in a feature, such as its name, data type or precision.
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*
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* @author gvSIG team
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* @version $Id$
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*/
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public interface FeatureAttributeDescriptor |
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extends DynField_v2, LabeledValue<FeatureAttributeDescriptor> {
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// public static final int BYTE_MAX_PRECISION = 3; // max byte 255
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// public static final int BYTE_DEFAULT_PRECISION = BYTE_MAX_PRECISION;
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//
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// public static final int INT_MAX_PRECISION = 10; // max int 2147483647.
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// public static final int INT_DEFAULT_PRECISION = INT_MAX_PRECISION;
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//
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// public static final int LONG_MAX_PRECISION = 19; // max long 9223372036854775807.
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// public static final int LONG_DEFAULT_PRECISION = LONG_MAX_PRECISION;
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//
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// // IEEE 754 Single-precision floating-point
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// // https://en.m.wikipedia.org/wiki/Single-precision_floating-point_format
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// public static final int FLOAT_MAX_PRECISION = 8; // 24bits
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// public static final int FLOAT_DEFAULT_PRECISION = FLOAT_MAX_PRECISION;
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// public static final int FLOAT_DEFAULT_SCALE = 3;
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//
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// // IEEE 754 Double-precision floating-point
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// // https://en.m.wikipedia.org/wiki/Double-precision_floating-point_format
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// public static final int DOUBLE_MAX_PRECISION = 16; // 54bits
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// public static final int DOUBLE_DEFAULT_PRECISION = DOUBLE_MAX_PRECISION;
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// public static final int DOUBLE_DEFAULT_SCALE = 8;
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//
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// // La precision de un BigDecimal es la de un BigInteger, que esta
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// // en 2^500000000, vamos a dejarla en que es algo mas de 2^5000000, siendo
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// // consciente de que algunos proveedores no podran suportarla y la recortaran.
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// public static final int DECIMAL_MAX_PRECISION = 2000000;
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// public static final int DECIMAL_DEFAULT_PRECISION = 20;
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// public static final int DECIMAL_DEFAULT_SCALE = 3;
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//
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/**
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* Returns a clone of this attribute descriptor
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*
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* @return FeatureAttributeDescriptor A new copy of this
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*/
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public FeatureAttributeDescriptor getCopy();
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/**
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* Returns the name of this attribute's data type.
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*
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* @return a string containing the name of this attribute's data type.
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*/
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public String getDataTypeName(); |
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public String getDataProfileName(); |
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public DataProfile getDataProfile();
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/**
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* Returns a number that indicates the size of this attribute. See the
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* documentation for the various constants of {@link DataTypes} for how to
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* interpret this value. As an example, when the data type is
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* {@link DataTypes#STRING}, this value indicates the maximum length of the
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* string.
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*
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* @return an <code>int</code> indicating the size of the attribute.
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*/
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public int getSize(); |
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/**
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* For attributes of type {@link DataTypes#DECIMAL}, this returns the maximum
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* number of digits. For other types, this must always return zero.
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*
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* @return
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*/
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public int getPrecision(); |
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/**
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* For attributes of type {@link DataTypes#DECIMAL}, this returns the maximum
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* number of digits after the decimal point. For other types, this must always
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* return zero.
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*
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* @return
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*/
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public int getScale(); |
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/**
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* For attributes of type {@link DataTypes#DECIMAL}, this returns the
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* MathContext associated to this. For other types return
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* {@link MathContext#UNLIMITED}.
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*
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* @return
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*/
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public MathContext getMathContext(); |
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/**
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* Return a CoercionContext for this attribute.
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*
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* @return the CoercionContext
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*/
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public CoercionContext getCoercionContext();
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/**
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* Return a Coercion to convert a value to the type of this attribute.
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*
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* @return the Coercion.
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*/
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public Coercion getCoercion();
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/**
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* Returns the rounding mode to use when a value is converted to the
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* attribute's data type. It will only be used for Float, Double and Decimal
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* data types.
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*
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* @return
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*/
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public int getRoundMode(); |
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/**
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* Returns the Locale associated with this attribute. It is usually used to
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* format and recognize dates and decimal numbers. The default Locale will be
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* <code>Locale. ENGLISH</code>
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*
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* @return
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*/
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public Locale getLocale(); |
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/**
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* For attributes of type {@link DataTypes#OBJECT}, this returns the Java
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* {@link Class} object that class or interface that all values of this
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* attribute can be cast to.
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*
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* @return
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*/
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public Class getObjectClass(); |
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/**
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* Returns the minimum number of occurrences of this attribute on a given
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* feature. The vast majority of data sources and data consumers will only
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* function with this value being zero or one. If the minimum number of
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* occurrences is zero, this is equivalent, in SQL terms, to the attribute
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* being nillable.
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*
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* @return
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*/
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public int getMinimumOccurrences(); |
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/**
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* Returns the maximum number of occurrences of this attribute on a given
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* feature.The vast majority of data sources and data consumers will only
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* function with this value being one. A value of {@link Integer#MAX_VALUE}
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* indicates that the maximum number of occurrences is unbounded.
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*
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* @return
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*/
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public int getMaximumOccurrences(); |
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/**
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* Returns {@code true} if this attribute forms all or part of the unique
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* identifying value for the feature it is contained by. The primary key
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* attributes uniquely identify this feature from other features of the same
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* type. This is different from the {@linkplain Feature#getReference()}, which
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* must uniquely identify the {@link Feature} among all feature types.
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*
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* @return
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*/
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public boolean isPrimaryKey(); |
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/**
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* Indicates whether this attribute accepts null values.
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*
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* @return true if this attribute can be null, false if not.
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*/
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public boolean allowNull(); |
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/**
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* Returns an evaluator that will be used to calculate the value of this
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* attribute
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*/
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public Evaluator getEvaluator();
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/**
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* If this attribute is a {@link Geometry}, this method returns its Spatial
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* Reference System.
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*
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* @return the SRS if this attribute is a {@link Geometry}, otherwise this
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* method returns null.
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*/
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public IProjection getSRS();
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/**
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* If this attribute is a {@link Geometry}, this method returns the specific
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* geometry type, as defined in {@link Geometry.TYPES}.
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*
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* @return One of {@link Geometry.TYPES}
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* @deprecated use {@link #getGeomType()} instead. To be removed in gvSIG 2.1.
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*/
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public int getGeometryType(); |
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/**
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* If this attribute is a {@link Geometry}, this method returns the specific
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* geometry subtype, as defined in {@link Geometry.SUBTYPES}.
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*
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* @return One of {@link Geometry.SUBTYPES}
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* @deprecated use {@link #getGeomType()} instead. To be removed in gvSIG 2.1.
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*/
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public int getGeometrySubType(); |
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/**
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* Returns the {@link GeometryType} of the attribute if it is a geometry.
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*
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* @return the geometry type
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*/
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public GeometryType getGeomType();
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/**
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* If this attribute is of type Date, then this method returns the date format
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* set by the data store.
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*
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* @return a date format
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*/
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public DateFormat getDateFormat(); |
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/**
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* Return the default value coerced to the data type of attribute. Return null
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* if can't coerce.
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*
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* @return default value or null.
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*/
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public Object getDefaultValueCoerced(); |
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/**
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* Returns this attribute relative position within the {@link Feature}.
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*
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* @return an index
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*/
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public int getIndex(); |
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/**
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* Returns additional information of the attribute
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*
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* @return info
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*
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*/
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public Object getAdditionalInfo(String infoName); |
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/**
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* Returns if value is created automatically by the source
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*/
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public boolean isAutomatic(); |
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/**
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* Gets if the attribute is a temporal attribute.
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*
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* @return <code>true</code> if is a temporal attribute
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*/
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public boolean isTime(); |
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public Interval getInterval();
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/**
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* Return true if the attribute has and index in the table.
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*
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* @return true if indexed.
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*/
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public boolean isIndexed(); |
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public boolean allowIndexDuplicateds(); |
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public boolean isIndexAscending(); |
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public boolean isForeingKey(); |
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public ForeingKey getForeingKey();
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/**
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* Gets if the attribute has a {@link FeatureAttributeGetter}.
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*
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* @return a FeatureAttributeGetter or null.
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* @deprecated use getFeatureAttributeGetterAndSetter
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*/
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public FeatureAttributeGetter getFeatureAttributeGetter();
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/**
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* Sets the {@link FeatureAttributeGetter} that is used to update the
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* presentation of a field.
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*
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* @param featureAttributeGetter the {@link FeatureAttributeGetter} to set.
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* @deprecated use setFeatureAttributeGetterAndSetter
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*/
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public void setFeatureAttributeGetter(FeatureAttributeGetter featureAttributeGetter); |
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/**
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* Gets the attribute emulator associatted {@link FeatureAttributeEmulator} to
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* this attribute.
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*
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* @return a FeatureAttributeEmulator or null.
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*/
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public FeatureAttributeEmulator getFeatureAttributeEmulator();
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/**
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* Return true if the attribute has an evaluator o an emulator.
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*
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* @return
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*/
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public boolean isComputed(); |
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/**
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* Return the store associated to this attribute descriptor.
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*
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* @return the FeatureStore of the attribute descriptor.
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*/
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public FeatureStore getStore();
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public FeatureType getFeatureType();
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public String[] getRequiredFieldNames(); |
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public void recentUsed(); |
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@Override
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public String getLocalizedShortLabel(); |
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@Override
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public String getLocalizedLabel(); |
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public String getLabelOfValue(Object value); |
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public boolean hasOnlyMetadataChanges(FeatureAttributeDescriptor other); |
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public boolean hasLabel(); |
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public boolean hasShortLabel(); |
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public boolean hasDescription(); |
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/**
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* Retrieve the value of the attribute "name".
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*
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* @param name
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* @return
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*/
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public Object get(String name); |
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} |