querydata.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

</DL>
</DL>
<HR>

<A NAME="statement"><!-- --></A><H3>
statement</H3>
<PRE>
protected <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/sql/Statement.html" title="class or interface in java.sql">Statement</A> <B>statement</B></PRE>
<DL>
<DL>
</DL>
</DL>
<HR>

<A NAME="mapper"><!-- --></A><H3>
mapper</H3>
<PRE>
protected <A HREF="../../../../org/geotools/data/jdbc/fidmapper/FIDMapper.html" title="interface in org.geotools.data.jdbc.fidmapper">FIDMapper</A> <B>mapper</B></PRE>
<DL>
<DL>
</DL>
</DL>
<HR>

<A NAME="attributeHandlers"><!-- --></A><H3>
attributeHandlers</H3>
<PRE>
protected <A HREF="../../../../org/geotools/data/jdbc/attributeio/AttributeIO.html" title="interface in org.geotools.data.jdbc.attributeio">AttributeIO</A>[] <B>attributeHandlers</B></PRE>
<DL>
<DL>
</DL>
</DL>
<HR>

<A NAME="baseIndex"><!-- --></A><H3>
baseIndex</H3>
<PRE>
protected int <B>baseIndex</B></PRE>
<DL>
<DL>
</DL>
</DL>

<!-- ========= CONSTRUCTOR DETAIL ======== -->

<A NAME="constructor_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TD COLSPAN=1><FONT SIZE="+2">
<B>Constructor Detail</B></FONT></TD>
</TR>
</TABLE>

<A NAME="QueryData(org.geotools.data.jdbc.FeatureTypeInfo, org.geotools.data.jdbc.JDBC1DataStore, java.sql.Connection, java.sql.Statement, java.sql.ResultSet, org.geotools.data.Transaction)"><!-- --></A><H3>
QueryData</H3>
<PRE>
public <B>QueryData</B>(<A HREF="../../../../org/geotools/data/jdbc/FeatureTypeInfo.html" title="class in org.geotools.data.jdbc">FeatureTypeInfo</A>&nbsp;featureTypeInfo,
                 <A HREF="../../../../org/geotools/data/jdbc/JDBC1DataStore.html" title="class in org.geotools.data.jdbc">JDBC1DataStore</A>&nbsp;parentDataStore,
                 <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/sql/Connection.html" title="class or interface in java.sql">Connection</A>&nbsp;connection,
                 <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/sql/Statement.html" title="class or interface in java.sql">Statement</A>&nbsp;statement,
                 <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/sql/ResultSet.html" title="class or interface in java.sql">ResultSet</A>&nbsp;resultSet,
                 <A HREF="../../../../org/geotools/data/Transaction.html" title="interface in org.geotools.data">Transaction</A>&nbsp;transaction)
          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>Creates a new QueryData object.
<P>
<DT><B>Parameters:</B><DD><CODE>featureTypeInfo</CODE> - <DD><CODE>parentDataStore</CODE> - <DD><CODE>connection</CODE> - <DD><CODE>statement</CODE> - <DD><CODE>resultSet</CODE> - <DD><CODE>transaction</CODE> - </DL>

<!-- ============ METHOD DETAIL ========== -->

<A NAME="method_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TD COLSPAN=1><FONT SIZE="+2">
<B>Method Detail</B></FONT></TD>
</TR>
</TABLE>

<A NAME="getAttributeCount()"><!-- --></A><H3>
getAttributeCount</H3>
<PRE>
public int <B>getAttributeCount</B>()</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/geotools/data/AttributeReader.html" title="interface in org.geotools.data">AttributeReader</A></CODE></B></DD>
<DD>The number of attributes this reader can read, i.e the length of a row.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/data/AttributeReader.html#getAttributeCount()">getAttributeCount</A></CODE> in interface <CODE><A HREF="../../../../org/geotools/data/AttributeReader.html" title="interface in org.geotools.data">AttributeReader</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>Number of attribtues this reader can read<DT><B>See Also:</B><DD><A HREF="../../../../org/geotools/data/AttributeWriter.html#getAttributeCount()"><CODE>AttributeWriter.getAttributeCount()</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getAttributeHandlers()"><!-- --></A><H3>
getAttributeHandlers</H3>
<PRE>
public <A HREF="../../../../org/geotools/data/jdbc/attributeio/AttributeIO.html" title="interface in org.geotools.data.jdbc.attributeio">AttributeIO</A>[] <B>getAttributeHandlers</B>()</PRE>
<DL>
<DD>Returns the AttributeIO objects used to parse and encode the column values
 stored in the database
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getConnection()"><!-- --></A><H3>
getConnection</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/sql/Connection.html" title="class or interface in java.sql">Connection</A> <B>getConnection</B>()</PRE>
<DL>
<DD>DOCUMENT ME!
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getMapper()"><!-- --></A><H3>
getMapper</H3>
<PRE>
public <A HREF="../../../../org/geotools/data/jdbc/fidmapper/FIDMapper.html" title="interface in org.geotools.data.jdbc.fidmapper">FIDMapper</A> <B>getMapper</B>()</PRE>
<DL>
<DD>Returns the FID mapper to be used when reading/writing features
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getTransaction()"><!-- --></A><H3>
getTransaction</H3>
<PRE>
public <A HREF="../../../../org/geotools/data/Transaction.html" title="interface in org.geotools.data">Transaction</A> <B>getTransaction</B>()</PRE>
<DL>
<DD>Returns the current transation
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="close()"><!-- --></A><H3>
close</H3>
<PRE>
public void <B>close</B>()</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/geotools/data/AttributeReader.html" title="interface in org.geotools.data">AttributeReader</A></CODE></B></DD>
<DD>Release any resources associated with this reader
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/data/AttributeReader.html#close()">close</A></CODE> in interface <CODE><A HREF="../../../../org/geotools/data/AttributeReader.html" title="interface in org.geotools.data">AttributeReader</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>See Also:</B><DD><A HREF="../../../../org/geotools/data/AttributeWriter.html#close()"><CODE>AttributeWriter.close()</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="close(java.sql.SQLException)"><!-- --></A><H3>
close</H3>
<PRE>
public void <B>close</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/sql/SQLException.html" title="class or interface in java.sql">SQLException</A>&nbsp;sqlException)</PRE>
<DL>
<DD>Closes the JDBC objects associated to the queryData and reports the sqlException on the LOG
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>sqlException</CODE> - </DL>
</DD>
</DL>
<HR>

<A NAME="read(int)"><!-- --></A><H3>
read</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>read</B>(int&nbsp;index)
            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>,
                   <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/ArrayIndexOutOfBoundsException.html" title="class or interface in java.lang">ArrayIndexOutOfBoundsException</A></PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/geotools/data/AttributeReader.html" title="interface in org.geotools.data">AttributeReader</A></CODE></B></DD>
<DD>Read the attribute at the given index.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/data/AttributeReader.html#read(int)">read</A></CODE> in interface <CODE><A HREF="../../../../org/geotools/data/AttributeReader.html" title="interface in org.geotools.data">AttributeReader</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>Object Attribute at given index
<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>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/ArrayIndexOutOfBoundsException.html" title="class or interface in java.lang">ArrayIndexOutOfBoundsException</A></CODE><DT><B>See Also:</B><DD><A HREF="../../../../org/geotools/data/AttributeReader.html#read(int)"><CODE>AttributeReader.read(int)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="write(int, java.lang.Object)"><!-- --></A><H3>
write</H3>
<PRE>
public void <B>write</B>(int&nbsp;i,
                  <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;currAtt)
           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><B>Description copied from interface: <CODE><A HREF="../../../../org/geotools/data/AttributeWriter.html" title="interface in org.geotools.data">AttributeWriter</A></CODE></B></DD>
<DD>Write the given attribute value at the position indicated.
 Implementations can choose to immediately flush the write or buffer it.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/data/AttributeWriter.html#write(int, java.lang.Object)">write</A></CODE> in interface <CODE><A HREF="../../../../org/geotools/data/AttributeWriter.html" title="interface in org.geotools.data">AttributeWriter</A></CODE></DL>
</DD>
<DD><DL>

<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><DT><B>See Also:</B><DD><A HREF="../../../../org/geotools/data/AttributeWriter.html#write(int, java.lang.Object)"><CODE>AttributeWriter.write(int, java.lang.Object)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="readFidColumn(int)"><!-- --></A><H3>
readFidColumn</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>readFidColumn</B>(int&nbsp;index)
                     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>Reads a column of the primary key
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>index</CODE> - the column index among the primary key columns (as reported by the FIDMapper)
<DT><B>Returns:</B><DD>fid value
<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>
<DD><CODE><A HREF="../../../../org/geotools/data/DataSourceException.html" title="class in org.geotools.data">DataSourceException</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="writeFidColumn(int, java.lang.Object)"><!-- --></A><H3>
writeFidColumn</H3>
<PRE>
public void <B>writeFidColumn</B>(int&nbsp;index,
                           <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;value)
                    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>Writes a column of the primary key
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>index</CODE> - the FID column index among the primary key columns (as reported by the FIDMapper)<DD><CODE>value</CODE> - the column value