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<div class="subTitle">org.olap4j</div>
<h2 title="Interface OlapWrapper" class="title">Interface OlapWrapper</h2>
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<dt>All Known Subinterfaces:</dt>
<dd><a href="../../org/olap4j/CellSet.html" title="interface in org.olap4j">CellSet</a>, <a href="../../org/olap4j/CellSetMetaData.html" title="interface in org.olap4j">CellSetMetaData</a>, <a href="../../org/olap4j/OlapConnection.html" title="interface in org.olap4j">OlapConnection</a>, <a href="../../org/olap4j/OlapDatabaseMetaData.html" title="interface in org.olap4j">OlapDatabaseMetaData</a>, <a href="../../org/olap4j/OlapStatement.html" title="interface in org.olap4j">OlapStatement</a>, <a href="../../org/olap4j/PreparedOlapStatement.html" title="interface in org.olap4j">PreparedOlapStatement</a></dd>
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<pre>public interface <a href="../../src-html/org/olap4j/OlapWrapper.html#line.75">OlapWrapper</a></pre>
<div class="block">Interface for olap4j classes which provide the ability to retrieve the
delegate instance when the instance in question is in fact a proxy class.
<p><code>OlapWrapper</code> duplicates the functionality of the
<code>java.sql.Wrapper</code> interface (introduced in JDBC 4.0), making
this functionality available to olap4j clients running in a JDBC 3.0
environment. For code which will run only on JDBC 4.0 and later, Wrapper can
be used, and OlapWrapper can be ignored.</p>
<p>In JDBC 3.0 (JDK 1.5) and earlier, the <code>OlapWrapper</code> interface
is used to convert a JDBC class to the corresponding olap4j class. For
instance, write
<blockquote>
<pre>
import java.sql.Connection;
import java.sql.DriverManager;
import org.olap4j.OlapConnection;
import org.olap4j.OlapWrapper;
Connection connection = DriverManager.getConnection("jdbc: ...");
OlapWrapper wrapper = (OlapWrapper) connection;
OlapConnection olapConnection = wrapper.unwrap(OlapConnection.class);
</pre>
</blockquote>
to create a JDBC 3.0 connection and convert it to an olap4j connection.
<p>In JDBC 4.0 (JDK 1.6) and later, you don't need to use this class. All of
the key JDBC classes implement <code>java.sql.Wrapper</code> interface, so
you can use its <code>isWrapper</code> and <code>unwrap</code> methods
without casting. For instance, write
<blockquote>
<pre>
import java.sql.Connection;
import java.sql.DriverManager;
import org.olap4j.OlapConnection;
Connection connection = DriverManager.getConnection("jdbc: ...");
OlapConnection olapConnection = connection.unwrap(OlapConnection.class);
</pre>
</blockquote>
to create a JDBC 4.0 connection and convert it to an olap4j connection.</div>
<dl><dt><span class="strong">Since:</span></dt>
<dd>Jun 14, 2007</dd>
<dt><span class="strong">Version:</span></dt>
<dd>$Id: OlapWrapper.java 482 2012-01-05 23:27:27Z jhyde $</dd>
<dt><span class="strong">Author:</span></dt>
<dd>jhyde</dd></dl>
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<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../org/olap4j/OlapWrapper.html#isWrapperFor(java.lang.Class)">isWrapperFor</a></strong>(<a href="/usr/share/doc/default-jdk-doc/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a><?> iface)</code> </td>
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<td class="colFirst"><code><T> T</code></td>
<td class="colLast"><code><strong><a href="../../org/olap4j/OlapWrapper.html#unwrap(java.lang.Class)">unwrap</a></strong>(<a href="/usr/share/doc/default-jdk-doc/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a><T> iface)</code> </td>
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<h4>unwrap</h4>
<pre><T> T <a href="../../src-html/org/olap4j/OlapWrapper.html#line.78">unwrap</a>(<a href="/usr/share/doc/default-jdk-doc/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a><T> iface)
throws <a href="/usr/share/doc/default-jdk-doc/api/java/sql/SQLException.html?is-external=true" title="class or interface in java.sql">SQLException</a></pre>
<dl><dt><span class="strong">Throws:</span></dt>
<dd><code><a href="/usr/share/doc/default-jdk-doc/api/java/sql/SQLException.html?is-external=true" title="class or interface in java.sql">SQLException</a></code></dd></dl>
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<h4>isWrapperFor</h4>
<pre>boolean <a href="../../src-html/org/olap4j/OlapWrapper.html#line.82">isWrapperFor</a>(<a href="/usr/share/doc/default-jdk-doc/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a><?> iface)
throws <a href="/usr/share/doc/default-jdk-doc/api/java/sql/SQLException.html?is-external=true" title="class or interface in java.sql">SQLException</a></pre>
<dl><dt><span class="strong">Throws:</span></dt>
<dd><code><a href="/usr/share/doc/default-jdk-doc/api/java/sql/SQLException.html?is-external=true" title="class or interface in java.sql">SQLException</a></code></dd></dl>
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