svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.library / org.gvsig.exportto / org.gvsig.exportto.lib / org.gvsig.exportto.lib.api / src / main / java / org / gvsig / export / spi / CutAttributeNamesTranslator.java @ 44386
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package org.gvsig.export.spi; |
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import java.util.ArrayList; |
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import java.util.Collection; |
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import java.util.logging.Level; |
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import java.util.logging.Logger; |
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import org.apache.commons.lang3.StringUtils; |
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import org.gvsig.export.ExportAttributes; |
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import org.gvsig.export.ExportAttributes.ExportAttribute; |
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public class CutAttributeNamesTranslator implements AttributeNamesTranslator { |
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public final int maxNameLen; |
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public CutAttributeNamesTranslator(int maxNameLen) { |
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this.maxNameLen = maxNameLen;
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} |
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private String buildTranslatedName(String source_name, Collection<String> current_names) { |
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int len = source_name.length();
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if (source_name.isEmpty()) {
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source_name = "Field";
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} |
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if (len <= this.maxNameLen && !current_names.contains(source_name)) { |
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/*
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* Should not happen
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*/
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return source_name;
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} |
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String target_name = source_name;
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/*
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* GDAL field name truncation method (extended from 100 to 255)
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* THISISAVERYLONGNAME => THISISAVER, THISISAV_1 ... THISISAV_9,
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* THISISAV10 ... THISISAV99, THISISA100 ... THISISA255
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* (255 = max number of fields in a SHP)
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*/
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for (int i = 0; i < 255; i++) { |
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if (len <= this.maxNameLen) { |
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if (i <= 9) { |
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if (len == this.maxNameLen) { |
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target_name = source_name.substring(0, 8) + "_" + i; |
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} else {
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target_name = source_name + "_" + i;
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} |
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} else if (i <= 99) { |
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if (len == this.maxNameLen) { |
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target_name = source_name.substring(0, 8) + i;; |
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} else {
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target_name = source_name + i; |
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} |
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} else {
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if (len == this.maxNameLen-1) { |
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target_name = source_name.substring(0, 7) + i;; |
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} else {
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target_name = source_name + i; |
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} |
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} |
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} else {
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if (i == 0) { |
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target_name = source_name.substring(0, 10); |
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} else if (i <= 9) { |
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target_name = source_name.substring(0, 8) + "_" + i; |
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} else if (i <= 99) { |
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target_name = source_name.substring(0, 8) + i; |
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} else {
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target_name = source_name.substring(0, 7) + i; |
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} |
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} |
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if (!current_names.contains(target_name)) {
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return target_name;
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} |
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} |
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/*
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* Should not get here
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*/
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return source_name.substring(0, 4) + "_" + (System.currentTimeMillis() % 1000000); |
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} |
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@Override
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public boolean isValidName(ExportAttributes attributes, int index, String name) { |
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ExportAttribute selectedAttr = attributes.get(index); |
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//
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String selfName = this.getNameSuggestion(attributes, index, name); |
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if (!selfName.equals(name)) {
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return false; |
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} |
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// check with others values
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boolean valid = true; |
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for (int i = 0; i < attributes.size(); i++) { |
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if (i == index) {
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continue;
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} |
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ExportAttribute attr = attributes.get(i); |
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String newName = attr.getNewName();
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if (newName.isEmpty()) {
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return false; |
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} |
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if (newName.equals(name)) {
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return false; |
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} |
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if (newName.equals(this.getNameSuggestion(attributes, index, name))) { |
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return false; |
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} |
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} |
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return valid;
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} |
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@Override
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public String getNameSuggestion(ExportAttributes attributes, int index, String name) { |
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ArrayList names = new ArrayList(); |
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boolean oneTime = true; |
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for (ExportAttribute attribute : attributes) {
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if (attribute.getNewName().equals(name) && oneTime) {
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oneTime = false;
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continue;
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} |
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names.add(attribute.getNewName()); |
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} |
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String target_name = buildTranslatedName(name, names);
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return target_name;
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} |
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@Override
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public CutAttributeNamesTranslator clone() {
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CutAttributeNamesTranslator clone = null;
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try {
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clone = ( CutAttributeNamesTranslator)super.clone();
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} catch (CloneNotSupportedException ex) { |
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Logger.getLogger(CutAttributeNamesTranslator.class.getName()).log(Level.SEVERE, null, ex); |
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} |
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return clone;
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} |
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@Override
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public String getNameSuggestion(String name) { |
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String s = StringUtils.left(name, maxNameLen);
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return s;
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} |
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} |