token.html

来自「 Lucene是apache软件基金会[4] jakarta项目组的一个子项目」· HTML 代码 · 共 524 行 · 第 1/2 页

public <B>Token</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;text,
             int&nbsp;start,
             int&nbsp;end)</PRE>
<DL>
<DD>Constructs a Token with the given term text, and start & end offsets.
      The type defaults to "word."
<P>
</DL>
<HR>

<A NAME="Token(java.lang.String, int, int, java.lang.String)"><!-- --></A><H3>
Token</H3>
<PRE>
public <B>Token</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;text,
             int&nbsp;start,
             int&nbsp;end,
             <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;typ)</PRE>
<DL>
<DD>Constructs a Token with the given text, start and end offsets, & type.
<P>
</DL>

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<A NAME="setPositionIncrement(int)"><!-- --></A><H3>
setPositionIncrement</H3>
<PRE>
public void <B>setPositionIncrement</B>(int&nbsp;positionIncrement)</PRE>
<DL>
<DD>Set the position increment.  This determines the position of this token
 relative to the previous Token in a <A HREF="../../../../org/apache/lucene/analysis/TokenStream.html" title="class in org.apache.lucene.analysis"><CODE>TokenStream</CODE></A>, used in phrase
 searching.

 <p>The default value is one.

 <p>Some common uses for this are:<ul>

 <li>Set it to zero to put multiple terms in the same position.  This is
 useful if, e.g., a word has multiple stems.  Searches for phrases
 including either stem will match.  In this case, all but the first stem's
 increment should be set to zero: the increment of the first instance
 should be one.  Repeating a token with an increment of zero can also be
 used to boost the scores of matches on that token.

 <li>Set it to values greater than one to inhibit exact phrase matches.
 If, for example, one does not want phrases to match across removed stop
 words, then one could build a stop word filter that removes stop words and
 also sets the increment to the number of stop words removed before each
 non-stop word.  Then exact phrase queries will only match when the terms
 occur with no intervening stop words.

 </ul>
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>See Also:</B><DD><A HREF="../../../../org/apache/lucene/index/TermPositions.html" title="interface in org.apache.lucene.index"><CODE>TermPositions</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getPositionIncrement()"><!-- --></A><H3>
getPositionIncrement</H3>
<PRE>
public int <B>getPositionIncrement</B>()</PRE>
<DL>
<DD>Returns the position increment of this Token.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>See Also:</B><DD><A HREF="../../../../org/apache/lucene/analysis/Token.html#setPositionIncrement(int)"><CODE>setPositionIncrement(int)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="setTermText(java.lang.String)"><!-- --></A><H3>
setTermText</H3>
<PRE>
public void <B>setTermText</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;text)</PRE>
<DL>
<DD>Sets the Token's term text.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="termText()"><!-- --></A><H3>
termText</H3>
<PRE>
public final <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> <B>termText</B>()</PRE>
<DL>
<DD>Returns the Token's term text.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="startOffset()"><!-- --></A><H3>
startOffset</H3>
<PRE>
public final int <B>startOffset</B>()</PRE>
<DL>
<DD>Returns this Token's starting offset, the position of the first character
    corresponding to this token in the source text.

    Note that the difference between endOffset() and startOffset() may not be
    equal to termText.length(), as the term text may have been altered by a
    stemmer or some other filter.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="endOffset()"><!-- --></A><H3>
endOffset</H3>
<PRE>
public final int <B>endOffset</B>()</PRE>
<DL>
<DD>Returns this Token's ending offset, one greater than the position of the
    last character corresponding to this token in the source text.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="type()"><!-- --></A><H3>
type</H3>
<PRE>
public final <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> <B>type</B>()</PRE>
<DL>
<DD>Returns this Token's lexical type.  Defaults to "word".
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="toString()"><!-- --></A><H3>
toString</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> <B>toString</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="clone()"><!-- --></A><H3>
clone</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> <B>clone</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
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