sqlencoder.html

Geotools是一个开源的Java GIS工具包,可利用它来开发符合标准的地理信息系统。Geotools提供了OGC(Open Geospatial Consortium)规范的一个实现来作为他们的

<A NAME="visit(org.geotools.filter.Expression)"><!-- --></A><H3>
visit</H3>
<PRE>
public void <B>visit</B>(<A HREF="../../../org/geotools/filter/Expression.html" title="interface in org.geotools.filter">Expression</A>&nbsp;expression)</PRE>
<DL>
<DD>Writes the SQL for the attribute Expression.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../org/geotools/filter/FilterVisitor.html#visit(org.geotools.filter.Expression)">visit</A></CODE> in interface <CODE><A HREF="../../../org/geotools/filter/FilterVisitor.html" title="interface in org.geotools.filter">FilterVisitor</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>expression</CODE> - the attribute to turn to SQL.</DL>
</DD>
</DL>
<HR>

<A NAME="visit(org.geotools.filter.LiteralExpression)"><!-- --></A><H3>
visit</H3>
<PRE>
public void <B>visit</B>(<A HREF="../../../org/geotools/filter/LiteralExpression.html" title="interface in org.geotools.filter">LiteralExpression</A>&nbsp;expression)
           throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/RuntimeException.html" title="class or interface in java.lang">RuntimeException</A></PRE>
<DL>
<DD>Export the contents of a Literal Expresion
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../org/geotools/filter/FilterVisitor.html#visit(org.geotools.filter.LiteralExpression)">visit</A></CODE> in interface <CODE><A HREF="../../../org/geotools/filter/FilterVisitor.html" title="interface in org.geotools.filter">FilterVisitor</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>expression</CODE> - the Literal to export
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/RuntimeException.html" title="class or interface in java.lang">RuntimeException</A></CODE> - for io exception with writer</DL>
</DD>
</DL>
<HR>

<A NAME="visitLiteralGeometry(org.geotools.filter.LiteralExpression)"><!-- --></A><H3>
visitLiteralGeometry</H3>
<PRE>
protected void <B>visitLiteralGeometry</B>(<A HREF="../../../org/geotools/filter/LiteralExpression.html" title="interface in org.geotools.filter">LiteralExpression</A>&nbsp;expression)
                             throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD>Subclasses must implement this method in order to encode geometry
 filters according to the specific database implementation
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>expression</CODE> - 
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE> - DOCUMENT ME!
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/RuntimeException.html" title="class or interface in java.lang">RuntimeException</A></CODE> - DOCUMENT ME!</DL>
</DD>
</DL>
<HR>

<A NAME="visit(org.geotools.filter.GeometryFilter)"><!-- --></A><H3>
visit</H3>
<PRE>
public void <B>visit</B>(<A HREF="../../../org/geotools/filter/GeometryFilter.html" title="interface in org.geotools.filter">GeometryFilter</A>&nbsp;filter)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../org/geotools/filter/FilterVisitor.html" title="interface in org.geotools.filter">FilterVisitor</A></CODE></B></DD>
<DD>Called when accept is called on a Geometry Filter. Implementers will
 want to access the left and right geometries.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../org/geotools/filter/FilterVisitor.html#visit(org.geotools.filter.GeometryFilter)">visit</A></CODE> in interface <CODE><A HREF="../../../org/geotools/filter/FilterVisitor.html" title="interface in org.geotools.filter">FilterVisitor</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>filter</CODE> - The filter to visit<DT><B>See Also:</B><DD><A HREF="../../../org/geotools/filter/FilterVisitor.html#visit(org.geotools.filter.GeometryFilter)"><CODE>FilterVisitor.visit(org.geotools.filter.GeometryFilter)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="visit(org.geotools.filter.MathExpression)"><!-- --></A><H3>
visit</H3>
<PRE>
public void <B>visit</B>(<A HREF="../../../org/geotools/filter/MathExpression.html" title="interface in org.geotools.filter">MathExpression</A>&nbsp;expression)
           throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/RuntimeException.html" title="class or interface in java.lang">RuntimeException</A></PRE>
<DL>
<DD>Writes the SQL for the Math Expression.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../org/geotools/filter/FilterVisitor.html#visit(org.geotools.filter.MathExpression)">visit</A></CODE> in interface <CODE><A HREF="../../../org/geotools/filter/FilterVisitor.html" title="interface in org.geotools.filter">FilterVisitor</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>expression</CODE> - the Math phrase to be written.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/RuntimeException.html" title="class or interface in java.lang">RuntimeException</A></CODE> - for io problems</DL>
</DD>
</DL>
<HR>

<A NAME="visit(org.geotools.filter.FunctionExpression)"><!-- --></A><H3>
visit</H3>
<PRE>
public void <B>visit</B>(<A HREF="../../../org/geotools/filter/FunctionExpression.html" title="interface in org.geotools.filter">FunctionExpression</A>&nbsp;expression)
           throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/UnsupportedOperationException.html" title="class or interface in java.lang">UnsupportedOperationException</A></PRE>
<DL>
<DD>Writes sql for a function expression.  Not currently supported.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../org/geotools/filter/FilterVisitor.html#visit(org.geotools.filter.FunctionExpression)">visit</A></CODE> in interface <CODE><A HREF="../../../org/geotools/filter/FilterVisitor.html" title="interface in org.geotools.filter">FilterVisitor</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>expression</CODE> - a function expression
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/UnsupportedOperationException.html" title="class or interface in java.lang">UnsupportedOperationException</A></CODE> - every time, this isn't supported.</DL>
</DD>
</DL>
<HR>

<A NAME="setSqlNameEscape(java.lang.String)"><!-- --></A><H3>
setSqlNameEscape</H3>
<PRE>
public void <B>setSqlNameEscape</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;escape)</PRE>
<DL>
<DD>Sets the SQL name escape string.
 
 <p>
 The value of this string is prefixed and appended to table schema names,
 table names and column names in an SQL statement to support mixed-case
 and non-English names. Without this, the DBMS may assume a mixed-case
 name in the query should be treated as upper-case and an SQLCODE of
 -204 or 206 may result if the name is not found.
 </p>
 
 <p>
 Typically this is the double-quote character, ", but may not be for all
 databases.
 </p>
 
 <p>
 For example, consider the following query:
 </p>
 
 <p>
 SELECT Geom FROM Spear.ArchSites May be interpreted by the database as:
 SELECT GEOM FROM SPEAR.ARCHSITES  If the column and table names were
 actually created using mixed-case, the query needs to be specified as:
 SELECT "Geom" from "Spear"."ArchSites"
 </p>
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>escape</CODE> - the character to be used to escape database names</DL>
</DD>
</DL>
<HR>

<A NAME="setColnameEscape(java.lang.String)"><!-- --></A><H3>
setColnameEscape</H3>
<PRE>
public void <B>setColnameEscape</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;escape)</PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<I>Use setSqlNameEscape instead, as it is more aptly named.</I>
<P>
<DD>Sets the escape character for the column name.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>escape</CODE> - The character to be used to escape database names.</DL>
</DD>
</DL>
<HR>

<A NAME="getColnameEscape()"><!-- --></A><H3>
getColnameEscape</H3>
<PRE>
protected <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>getColnameEscape</B>()</PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<I>the escapeName method is preferred over this, it
             automatically returns the name properly escaped, since
             that's all getColnameEscape was being used for.</I>
<P>
<DD>Gets the column escape name.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the string to be used to properly escape a db's name.</DL>
</DD>
</DL>
<HR>

<A NAME="escapeName(java.lang.String)"><!-- --></A><H3>
escapeName</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>escapeName</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;name)</PRE>
<DL>
<DD>Surrounds a name with the SQL escape character.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>name</CODE> - 
<DT><B>Returns:</B><DD>DOCUMENT ME!</DL>
</DD>
</DL>
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