AdvancedPropertyComparator.java

package com.idega.builder.business;

import java.text.Collator;
import java.util.Comparator;
import java.util.Locale;

import com.idega.builder.bean.AdvancedProperty;
import com.idega.idegaweb.IWMainApplication;
import com.idega.presentation.IWContext;
import com.idega.util.CoreUtil;

public class AdvancedPropertyComparator implements Comparator<AdvancedProperty> {

	private boolean sortById, descending;
	private Boolean sortByName;
	private Locale locale = null;
	private Collator collator;

	public AdvancedPropertyComparator() {
		Locale locale = null;

		IWContext iwc = CoreUtil.getIWContext();
		if (iwc == null) {
			locale = IWMainApplication.getDefaultIWMainApplication().getSettings().getDefaultLocale();
		}
		else {
			locale = iwc.getCurrentLocale();
		}
		if (locale == null) {
			locale = Locale.ENGLISH;
		}

		this.locale = locale;
	}

	public AdvancedPropertyComparator(Locale locale) {
		this.locale = locale;
	}

	public AdvancedPropertyComparator(Boolean sortByName, Locale locale) {
		this(locale);
		this.sortByName = sortByName;
	}

	public AdvancedPropertyComparator(boolean sortById, Locale locale) {
		this(locale);
		this.sortById = sortById;
	}

	public AdvancedPropertyComparator(Locale locale, boolean descending) {
		this(locale);
		this.descending = descending;
	}

	@Override
	public int compare(AdvancedProperty prop1, AdvancedProperty prop2) {
		int result = 0;


		String value1 = null, value2 = null;;
		value1 = prop1.getValue();
		value2 = prop2.getValue();

		if (sortById) {
			value1 = prop1.getId();
			value2 = prop2.getId();

			if (value1 == null && value2 == null) {
				result = 0;
			}
			else if (value2 == null) {
				result = 1;
			}
			else if (value1 == null) {
				result = -1;
			}
			else {
				result = value1.compareTo(value2);
			}

			return result;
		} else if (sortByName != null && sortByName) {
			value1 = prop1.getName();
			value2 = prop2.getName();
		}

		result = getCollator().compare(value1, value2);
		return descending ? -1 * result : result;
	}

	private Collator getCollator() {
		if (collator == null) {
			collator = Collator.getInstance(locale);
		}
		return collator;
	}

}