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| <div class="refsect1"> |
| <h2 class="refsect1"><font face="arial, helvetica, sans-serif" color="#330099">id-validation</font></h2> |
| <p>Use <code>eclipselink.id-validation</code> to define which primary key components values are considered invalid.</p> |
| <a id="sthref922" name="sthref922"></a> |
| <p><strong><br /><span class="refsubsect">Values</span></strong></p> |
| <p><a href="#CACJGDDD">Table 5-37</a> describes this persistence property's values.</p> |
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| <p><strong><em><font face="arial, helvetica, sans-serif">Table 5-37 Valid Values for id-validation</font></em></strong></p> |
| <table class="HRuleFormalWide" title="Valid Values for id-validation" 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-t40"><font face="Arial, Helvetica, sans-serif"><strong>Value</strong></font></th> |
| <th align="left" valign="bottom" id="r1c2-t40"><font face="Arial, Helvetica, sans-serif"><strong>Description</strong></font></th> |
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| <td align="left" id="r2c1-t40" headers="r1c1-t40"> |
| <p><code>Negative</code></p> |
| </td> |
| <td align="left" headers="r2c1-t40 r1c2-t40"> |
| <p><code>Null</code>, <code>0</code> and negative values are invalid for IDs extending <code>Number</code> and primitive <code>int</code> and <code>long</code> IDs.</p> |
| </td> |
| </tr> |
| <tr align="left" valign="top"> |
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| <p><code>None</code></p> |
| </td> |
| <td align="left" headers="r3c1-t40 r1c2-t40"> |
| <p>EclipseLink performs no ID validation.</p> |
| </td> |
| </tr> |
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| <td align="left" id="r4c1-t40" headers="r1c1-t40"> |
| <p><code>Null</code></p> |
| </td> |
| <td align="left" headers="r4c1-t40 r1c2-t40"> |
| <p><code>Null</code> is invalid All other values are valid.</p> |
| </td> |
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| <p><code>Zero</code></p> |
| </td> |
| <td align="left" headers="r5c1-t40 r1c2-t40"> |
| <p><code>Null</code>, <code>0</code> and negative values are invalid for primitive <code>int</code> and <code>long</code> IDs.</p> |
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| <p><strong><br /><span class="refsubsect">Usage</span></strong></p> |
| <p>Identity and sequencing (with <code>shouldAlwaysOverrideExistingValue</code> configured as <code>true</code>) will override any existing ID value.</p> |
| <a id="sthref925" name="sthref925"></a> |
| <p><strong><br /><span class="refsubsect">Examples</span></strong></p> |
| <div class="example"><a id="TLJPA904" name="TLJPA904"></a><a id="sthref926" name="sthref926"></a> |
| <p><strong><em><font face="arial, helvetica, sans-serif">Example 5-27 Using id-validation in persistence.xml</font></em></strong></p> |
| <pre xml:space="preserve" class="oac_no_warn"> |
| <property name="<strong>eclipselink.id-validation</strong>" value="NULL"/> |
| </pre></div> |
| <!-- class="example" --> |
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| <p><strong><br /><span class="refsubsect">See Also</span></strong></p> |
| <p>For more information, see:</p> |
| <ul> |
| <li> |
| <p>"Persisting Objects" in <em>Understanding EclipseLink</em></p> |
| </li> |
| <li> |
| <p><a href="a_primarykey.htm#BGEBBFJE">"@PrimaryKey"</a></p> |
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