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| <div class="refsect1"> |
| <h2 class="refsect1"><font face="arial, helvetica, sans-serif" color="#330099">jdbc.timeout</font></h2> |
| <p>Use <code>eclipselink.jdbc.timeout</code> to specify number of seconds EclipseLink will wait (time out) for a query result, before throwing a <code>DatabaseExcpetion</code>.</p> |
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| <p class="note"><img src="../../../dcommon/images/note_icon.png" width="16" height="16" alt="Note" style="vertical-align:middle;padding-right:5px;" />Note:</p> |
| <p>This property requires JDBC driver support.</p> |
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| <p><strong><br /><span class="refsubsect">Values</span></strong></p> |
| <p><a href="#CHDHBCIE">Table 4-20</a> describes this query hint's valid values.</p> |
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| <p><strong><em><font face="arial, helvetica, sans-serif">Table 4-20 Valid Values for eclipselink.jdbc.timeout</font></em></strong></p> |
| <table class="HRuleFormalWide" title="Valid Values for eclipselink.jdbc.timeout" summary="Valid Values for this query hint" dir="ltr" border="1" width="100%" frame="hsides" rules="rows" cellpadding="3" cellspacing="0"> |
| <col width="29%" /> |
| <col width="*" /> |
| <thead> |
| <tr align="left" valign="top"> |
| <th align="left" valign="bottom" id="r1c1-t29"><font face="Arial, Helvetica, sans-serif"><strong>Value</strong></font></th> |
| <th align="left" valign="bottom" id="r1c2-t29"><font face="Arial, Helvetica, sans-serif"><strong>Description</strong></font></th> |
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| <p>from <code>0</code> to <code>Integer.MAX_VALUE</code></p> |
| </td> |
| <td align="left" headers="r2c1-t29 r1c2-t29"> |
| <p>(Default = <code>0</code>) As a <code>String</code>, depending on your JDBC driver.</p> |
| <p>If 0, EclipseLink will never time out waiting for a query.</p> |
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| <p><strong><br /><span class="refsubsect">Examples</span></strong></p> |
| <p><a href="#CHDGCDAG">Example 4-40</a> shows how to use this hint in a JPA query.</p> |
| <div class="example"><a id="CHDGCDAG" name="CHDGCDAG"></a><a id="TLJPA658" name="TLJPA658"></a> |
| <p><strong><em><font face="arial, helvetica, sans-serif">Example 4-40 Using jdbc.timeout in a JPA Query</font></em></strong></p> |
| <pre xml:space="preserve" class="oac_no_warn"> |
| import org.eclipse.persistence.config.CacheUsage; |
| import org.eclipse.persistence.config.QueryHints; |
| query.setHint(QueryHints.<strong>JDBC_TIMEOUT</strong>, "100"); |
| </pre></div> |
| <!-- class="example" --> |
| <p><a href="#CHDHICEC">Example 4-41</a> shows how to use this hint with the <code>@QueryHint</code> annotation.</p> |
| <div class="example"><a id="CHDHICEC" name="CHDHICEC"></a><a id="TLJPA659" name="TLJPA659"></a> |
| <p><strong><em><font face="arial, helvetica, sans-serif">Example 4-41 Using jdbc.timeout in a @QueryHint Annotation</font></em></strong></p> |
| <pre xml:space="preserve" class="oac_no_warn"> |
| import org.eclipse.persistence.config.CacheUsage; |
| import org.eclipse.persistence.config.TargetDatabase; |
| @QueryHint(name=QueryHints.<strong>JDBC_TIMEOUT</strong>, value="100"); |
| |
| </pre></div> |
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| <p><strong><br /><span class="refsubsect">See Also</span></strong></p> |
| <p>For more information, see:</p> |
| <ul> |
| <li> |
| <p><a href="q_querytype.htm#querytype">"query-type"</a></p> |
| </li> |
| <li> |
| <p>"About JPA Query Hints" in <em>Understanding EclipseLink</em></p> |
| </li> |
| <li> |
| <p>"Enhancing Performance" in <em>Solutions Guide for EclispeLink</em></p> |
| </li> |
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