datasource.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

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<CODE>&nbsp;<A HREF="../../../../../org/geotools/referencing/factory/AbstractAuthorityFactory.html" title="class in org.geotools.referencing.factory">AbstractAuthorityFactory</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/geotools/referencing/factory/epsg/DataSource.html#createFactory(org.geotools.factory.Hints)">createFactory</A></B>(<A HREF="../../../../../org/geotools/factory/Hints.html" title="class in org.geotools.factory">Hints</A>&nbsp;hints)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Opens a connection and creates an EPSG factory for it. </TD>
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<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/geotools/referencing/factory/epsg/DataSource.html#getPriority()">getPriority</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the priority for this data source, as a number between
 <A HREF="../../../../../org/geotools/referencing/factory/epsg/DataSource.html#MINIMUM_PRIORITY"><CODE>MINIMUM_PRIORITY</CODE></A> and <A HREF="../../../../../org/geotools/referencing/factory/epsg/DataSource.html#MAXIMUM_PRIORITY"><CODE>MAXIMUM_PRIORITY</CODE></A> inclusive.</TD>
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<TD><B>Methods inherited from interface <A HREF="http://java.sun.com/j2se/1.4/docs/api/javax/sql/DataSource.html" title="class or interface in javax.sql">DataSource</A></B></TD>
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<TD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/javax/sql/DataSource.html#getConnection()" title="class or interface in javax.sql">getConnection</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/javax/sql/DataSource.html#getConnection(java.lang.String, java.lang.String)" title="class or interface in javax.sql">getConnection</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/javax/sql/DataSource.html#getLoginTimeout()" title="class or interface in javax.sql">getLoginTimeout</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/javax/sql/DataSource.html#getLogWriter()" title="class or interface in javax.sql">getLogWriter</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/javax/sql/DataSource.html#setLoginTimeout(int)" title="class or interface in javax.sql">setLoginTimeout</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/javax/sql/DataSource.html#setLogWriter(java.io.PrintWriter)" title="class or interface in javax.sql">setLogWriter</A></CODE></TD>
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<A NAME="MINIMUM_PRIORITY"><!-- --></A><H3>
MINIMUM_PRIORITY</H3>
<PRE>
public static final int <B>MINIMUM_PRIORITY</B></PRE>
<DL>
<DD>The minimum priority for a data source, which is 1.
 Data sources with lowest priority will be used only if there is no other source available.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../../constant-values.html#org.geotools.referencing.factory.epsg.DataSource.MINIMUM_PRIORITY">Constant Field Values</A></DL>
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<A NAME="NORMAL_PRIORITY"><!-- --></A><H3>
NORMAL_PRIORITY</H3>
<PRE>
public static final int <B>NORMAL_PRIORITY</B></PRE>
<DL>
<DD>The default priority, which is 50.
<P>
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<DT><B>See Also:</B><DD><A HREF="../../../../../constant-values.html#org.geotools.referencing.factory.epsg.DataSource.NORMAL_PRIORITY">Constant Field Values</A></DL>
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<A NAME="MAXIMUM_PRIORITY"><!-- --></A><H3>
MAXIMUM_PRIORITY</H3>
<PRE>
public static final int <B>MAXIMUM_PRIORITY</B></PRE>
<DL>
<DD>The maximum priority for a data source, which is 100.
 Data sources with highest priority will be preferred to any other data sources.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../../constant-values.html#org.geotools.referencing.factory.epsg.DataSource.MAXIMUM_PRIORITY">Constant Field Values</A></DL>
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<A NAME="getPriority()"><!-- --></A><H3>
getPriority</H3>
<PRE>
public int <B>getPriority</B>()</PRE>
<DL>
<DD>Returns the priority for this data source, as a number between
 <A HREF="../../../../../org/geotools/referencing/factory/epsg/DataSource.html#MINIMUM_PRIORITY"><CODE>MINIMUM_PRIORITY</CODE></A> and <A HREF="../../../../../org/geotools/referencing/factory/epsg/DataSource.html#MAXIMUM_PRIORITY"><CODE>MAXIMUM_PRIORITY</CODE></A> inclusive.
<P>
<DD><DL>
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<A NAME="createFactory(org.geotools.factory.Hints)"><!-- --></A><H3>
createFactory</H3>
<PRE>
public <A HREF="../../../../../org/geotools/referencing/factory/AbstractAuthorityFactory.html" title="class in org.geotools.referencing.factory">AbstractAuthorityFactory</A> <B>createFactory</B>(<A HREF="../../../../../org/geotools/factory/Hints.html" title="class in org.geotools.factory">Hints</A>&nbsp;hints)
                                       throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/sql/SQLException.html" title="class or interface in java.sql">SQLException</A></PRE>
<DL>
<DD>Opens a connection and creates an EPSG factory for it. This method may returns a
 sub-class of <A HREF="../../../../../org/geotools/referencing/factory/epsg/FactoryUsingSQL.html" title="class in org.geotools.referencing.factory.epsg"><CODE>FactoryUsingSQL</CODE></A> if it wants to use slightly different SQL queries.
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<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>hints</CODE> - A map of hints, including the low-level factories to use for CRS creation.
         This argument should be given unchanged to  constructor.
<DT><B>Returns:</B><DD>The <A HREF="../../../../../org/geotools/referencing/factory/epsg/FactoryUsingSQL.html" title="class in org.geotools.referencing.factory.epsg">EPSG factory</A> using SQL queries appropriate
         for this data source.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/sql/SQLException.html" title="class or interface in java.sql">SQLException</A></CODE> - if connection to the database failed.</DL>
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