File	Doc	Category	Size	Date	Package
SortField.java	API Doc	Apache Lucene 1.4.3	7838	Tue May 25 00:51:42 BST 2004	org.apache.lucene.search

SortField

• java.lang.Object

Fields Summary
public static final int	SCORE Sort by document score (relevancy). Sort values are Float and higher values are at the front.
public static final int	DOC Sort by document number (index order). Sort values are Integer and lower values are at the front.
public static final int	AUTO Guess type of sort based on field contents. A regular expression is used to look at the first term indexed for the field and determine if it represents an integer number, a floating point number, or just arbitrary string characters.
public static final int	STRING Sort using term values as Strings. Sort values are String and lower values are at the front.
public static final int	INT Sort using term values as encoded Integers. Sort values are Integer and lower values are at the front.
public static final int	FLOAT Sort using term values as encoded Floats. Sort values are Float and lower values are at the front.
public static final int	CUSTOM Sort using a custom Comparator. Sort values are any Comparable and sorting is done according to natural order.
public static final SortField	FIELD_SCORE Represents sorting by document score (relevancy).
public static final SortField	FIELD_DOC Represents sorting by document number (index order).
private String	field
private int	type
private Locale	locale
boolean	reverse
private SortComparatorSource	factory

Constructors Summary
public SortField(String field) Creates a sort by terms in the given field where the type of term value is determined dynamically ({@link #AUTO AUTO}). param field Name of field to sort by, cannot be null. this.field = field.intern();
public SortField(String field, boolean reverse) Creates a sort, possibly in reverse, by terms in the given field where the type of term value is determined dynamically ({@link #AUTO AUTO}). param field Name of field to sort by, cannot be null. param reverse True if natural order should be reversed. this.field = field.intern(); this.reverse = reverse;
public SortField(String field, int type) Creates a sort by terms in the given field with the type of term values explicitly given. param field Name of field to sort by. Can be null if type is SCORE or DOC. param type Type of values in the terms. this.field = (field != null) ? field.intern() : field; this.type = type;
public SortField(String field, int type, boolean reverse) Creates a sort, possibly in reverse, by terms in the given field with the type of term values explicitly given. param field Name of field to sort by. Can be null if type is SCORE or DOC. param type Type of values in the terms. param reverse True if natural order should be reversed. this.field = (field != null) ? field.intern() : field; this.type = type; this.reverse = reverse;
public SortField(String field, Locale locale) Creates a sort by terms in the given field sorted according to the given locale. param field Name of field to sort by, cannot be null. param locale Locale of values in the field. this.field = field.intern(); this.type = STRING; this.locale = locale;
public SortField(String field, Locale locale, boolean reverse) Creates a sort, possibly in reverse, by terms in the given field sorted according to the given locale. param field Name of field to sort by, cannot be null. param locale Locale of values in the field. this.field = field.intern(); this.type = STRING; this.locale = locale; this.reverse = reverse;
public SortField(String field, SortComparatorSource comparator) Creates a sort with a custom comparison function. param field Name of field to sort by; cannot be null. param comparator Returns a comparator for sorting hits. this.field = (field != null) ? field.intern() : field; this.type = CUSTOM; this.factory = comparator;
public SortField(String field, SortComparatorSource comparator, boolean reverse) Creates a sort, possibly in reverse, with a custom comparison function. param field Name of field to sort by; cannot be null. param comparator Returns a comparator for sorting hits. param reverse True if natural order should be reversed. this.field = (field != null) ? field.intern() : field; this.type = CUSTOM; this.reverse = reverse; this.factory = comparator;

Methods Summary
public org.apache.lucene.search.SortComparatorSource	getFactory() return factory;
public java.lang.String	getField() Returns the name of the field. Could return null if the sort is by SCORE or DOC. return Name of field, possibly null. return field;
public java.util.Locale	getLocale() Returns the Locale by which term values are interpreted. May return null if no Locale was specified. return Locale, or null. return locale;
public boolean	getReverse() Returns whether the sort should be reversed. return True if natural order should be reversed. return reverse;
public int	getType() Returns the type of contents in the field. return One of the constants SCORE, DOC, AUTO, STRING, INT or FLOAT. return type;
public java.lang.String	toString() StringBuffer buffer = new StringBuffer(); switch (type) { case SCORE: buffer.append("<score>"); break; case DOC: buffer.append("<doc>"); break; case CUSTOM: buffer.append ("<custom:\"" + field + "\": " + factory + ">"); break; default: buffer.append("\"" + field + "\""); break; } if (locale != null) buffer.append ("("+locale+")"); if (reverse) buffer.append('!"); return buffer.toString();