javadoc/0.8.0-incubating/org/apache/iceberg/catalog/SupportsNamespaces.html - iceberg - Git at Google

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 <div class="subTitle">org.apache.iceberg.catalog</div>
 <h2 title="Interface SupportsNamespaces" class="title">Interface SupportsNamespaces</h2>
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 <pre>public interface <span class="typeNameLabel">SupportsNamespaces</span></pre>
 <div class="block">Catalog methods for working with namespaces.
  <p>
  If an object such as a table, view, or function exists, its parent namespaces must also exist
  and must be returned by the discovery methods <a href="../../../../org/apache/iceberg/catalog/SupportsNamespaces.html#listNamespaces--"><code>listNamespaces()</code></a> and
  <a href="../../../../org/apache/iceberg/catalog/SupportsNamespaces.html#listNamespaces-org.apache.iceberg.catalog.Namespace-"><code>listNamespaces(Namespace namespace)</code></a>.
  <p>
  Catalog implementations are not required to maintain the existence of namespaces independent of
  objects in a namespace. For example, a function catalog that loads functions using reflection
  and uses Java packages as namespaces is not required to support the methods to create, alter, or
  drop a namespace. Implementations are allowed to discover the existence of objects or namespaces
  without throwing <a href="../../../../org/apache/iceberg/exceptions/NoSuchNamespaceException.html" title="class in org.apache.iceberg.exceptions"><code>NoSuchNamespaceException</code></a> when no namespace is found.</div>
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 <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t5" class="tableTab"><span><a href="javascript:show(16);">Default Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
 <tr>
 <th class="colFirst" scope="col">Modifier and Type</th>
 <th class="colLast" scope="col">Method and Description</th>
 </tr>
 <tr id="i0" class="altColor">
 <td class="colFirst"><code>default void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/iceberg/catalog/SupportsNamespaces.html#createNamespace-org.apache.iceberg.catalog.Namespace-">createNamespace</a></span>(<a href="../../../../org/apache/iceberg/catalog/Namespace.html" title="class in org.apache.iceberg.catalog">Namespace</a>&nbsp;namespace)</code>
 <div class="block">Create a namespace in the catalog.</div>
 </td>
 </tr>
 <tr id="i1" class="rowColor">
 <td class="colFirst"><code>void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/iceberg/catalog/SupportsNamespaces.html#createNamespace-org.apache.iceberg.catalog.Namespace-java.util.Map-">createNamespace</a></span>(<a href="../../../../org/apache/iceberg/catalog/Namespace.html" title="class in org.apache.iceberg.catalog">Namespace</a>&nbsp;namespace,
                java.util.Map&lt;java.lang.String,java.lang.String&gt;&nbsp;metadata)</code>
 <div class="block">Create a namespace in the catalog.</div>
 </td>
 </tr>
 <tr id="i2" class="altColor">
 <td class="colFirst"><code>boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/iceberg/catalog/SupportsNamespaces.html#dropNamespace-org.apache.iceberg.catalog.Namespace-">dropNamespace</a></span>(<a href="../../../../org/apache/iceberg/catalog/Namespace.html" title="class in org.apache.iceberg.catalog">Namespace</a>&nbsp;namespace)</code>
 <div class="block">Drop a namespace.</div>
 </td>
 </tr>
 <tr id="i3" class="rowColor">
 <td class="colFirst"><code>default java.util.List&lt;<a href="../../../../org/apache/iceberg/catalog/Namespace.html" title="class in org.apache.iceberg.catalog">Namespace</a>&gt;</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/iceberg/catalog/SupportsNamespaces.html#listNamespaces--">listNamespaces</a></span>()</code>
 <div class="block">List top-level namespaces from the catalog.</div>
 </td>
 </tr>
 <tr id="i4" class="altColor">
 <td class="colFirst"><code>java.util.List&lt;<a href="../../../../org/apache/iceberg/catalog/Namespace.html" title="class in org.apache.iceberg.catalog">Namespace</a>&gt;</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/iceberg/catalog/SupportsNamespaces.html#listNamespaces-org.apache.iceberg.catalog.Namespace-">listNamespaces</a></span>(<a href="../../../../org/apache/iceberg/catalog/Namespace.html" title="class in org.apache.iceberg.catalog">Namespace</a>&nbsp;namespace)</code>
 <div class="block">List namespaces from the namespace.</div>
 </td>
 </tr>
 <tr id="i5" class="rowColor">
 <td class="colFirst"><code>java.util.Map&lt;java.lang.String,java.lang.String&gt;</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/iceberg/catalog/SupportsNamespaces.html#loadNamespaceMetadata-org.apache.iceberg.catalog.Namespace-">loadNamespaceMetadata</a></span>(<a href="../../../../org/apache/iceberg/catalog/Namespace.html" title="class in org.apache.iceberg.catalog">Namespace</a>&nbsp;namespace)</code>
 <div class="block">Load metadata properties for a namespace.</div>
 </td>
 </tr>
 <tr id="i6" class="altColor">
 <td class="colFirst"><code>default boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/iceberg/catalog/SupportsNamespaces.html#namespaceExists-org.apache.iceberg.catalog.Namespace-">namespaceExists</a></span>(<a href="../../../../org/apache/iceberg/catalog/Namespace.html" title="class in org.apache.iceberg.catalog">Namespace</a>&nbsp;namespace)</code>
 <div class="block">Checks whether the Namespace exists.</div>
 </td>
 </tr>
 <tr id="i7" class="rowColor">
 <td class="colFirst"><code>boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/iceberg/catalog/SupportsNamespaces.html#removeProperties-org.apache.iceberg.catalog.Namespace-java.util.Set-">removeProperties</a></span>(<a href="../../../../org/apache/iceberg/catalog/Namespace.html" title="class in org.apache.iceberg.catalog">Namespace</a>&nbsp;namespace,
                 java.util.Set&lt;java.lang.String&gt;&nbsp;properties)</code>
 <div class="block">Remove a set of metadata from a namespace in the catalog.</div>
 </td>
 </tr>
 <tr id="i8" class="altColor">
 <td class="colFirst"><code>boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/iceberg/catalog/SupportsNamespaces.html#setProperties-org.apache.iceberg.catalog.Namespace-java.util.Map-">setProperties</a></span>(<a href="../../../../org/apache/iceberg/catalog/Namespace.html" title="class in org.apache.iceberg.catalog">Namespace</a>&nbsp;namespace,
              java.util.Map&lt;java.lang.String,java.lang.String&gt;&nbsp;properties)</code>
 <div class="block">Apply a set of metadata to a namespace in the catalog.</div>
 </td>
 </tr>
 </table>
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 <h3>Method Detail</h3>
 <a name="createNamespace-org.apache.iceberg.catalog.Namespace-">
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 <h4>createNamespace</h4>
 <pre>default&nbsp;void&nbsp;createNamespace(<a href="../../../../org/apache/iceberg/catalog/Namespace.html" title="class in org.apache.iceberg.catalog">Namespace</a>&nbsp;namespace)</pre>
 <div class="block">Create a namespace in the catalog.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>namespace</code> - a namespace. <a href="../../../../org/apache/iceberg/catalog/Namespace.html" title="class in org.apache.iceberg.catalog"><code>Namespace</code></a>.</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="../../../../org/apache/iceberg/exceptions/AlreadyExistsException.html" title="class in org.apache.iceberg.exceptions">AlreadyExistsException</a></code> - If the namespace already exists</dd>
 <dd><code>java.lang.UnsupportedOperationException</code> - If create is not a supported operation</dd>
 </dl>
 </li>
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 <a name="createNamespace-org.apache.iceberg.catalog.Namespace-java.util.Map-">
 <!--   -->
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 <h4>createNamespace</h4>
 <pre>void&nbsp;createNamespace(<a href="../../../../org/apache/iceberg/catalog/Namespace.html" title="class in org.apache.iceberg.catalog">Namespace</a>&nbsp;namespace,
                      java.util.Map&lt;java.lang.String,java.lang.String&gt;&nbsp;metadata)</pre>
 <div class="block">Create a namespace in the catalog.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>namespace</code> - a multi-part namespace</dd>
 <dd><code>metadata</code> - a string Map of properties for the given namespace</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="../../../../org/apache/iceberg/exceptions/AlreadyExistsException.html" title="class in org.apache.iceberg.exceptions">AlreadyExistsException</a></code> - If the namespace already exists</dd>
 <dd><code>java.lang.UnsupportedOperationException</code> - If create is not a supported operation</dd>
 </dl>
 </li>
 </ul>
 <a name="listNamespaces--">
 <!--   -->
 </a>
 <ul class="blockList">
 <li class="blockList">
 <h4>listNamespaces</h4>
 <pre>default&nbsp;java.util.List&lt;<a href="../../../../org/apache/iceberg/catalog/Namespace.html" title="class in org.apache.iceberg.catalog">Namespace</a>&gt;&nbsp;listNamespaces()</pre>
 <div class="block">List top-level namespaces from the catalog.
  <p>
  If an object such as a table, view, or function exists, its parent namespaces must also exist
  and must be returned by this discovery method. For example, if table a.b.t exists, this method
  must return ["a"] in the result array.</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>an List of namespace <a href="../../../../org/apache/iceberg/catalog/Namespace.html" title="class in org.apache.iceberg.catalog"><code>Namespace</code></a> names</dd>
 </dl>
 </li>
 </ul>
 <a name="listNamespaces-org.apache.iceberg.catalog.Namespace-">
 <!--   -->
 </a>
 <ul class="blockList">
 <li class="blockList">
 <h4>listNamespaces</h4>
 <pre>java.util.List&lt;<a href="../../../../org/apache/iceberg/catalog/Namespace.html" title="class in org.apache.iceberg.catalog">Namespace</a>&gt;&nbsp;listNamespaces(<a href="../../../../org/apache/iceberg/catalog/Namespace.html" title="class in org.apache.iceberg.catalog">Namespace</a>&nbsp;namespace)
                                   throws <a href="../../../../org/apache/iceberg/exceptions/NoSuchNamespaceException.html" title="class in org.apache.iceberg.exceptions">NoSuchNamespaceException</a></pre>
 <div class="block">List namespaces from the namespace.
  <p>
  For example, if table a.b.t exists, use 'SELECT NAMESPACE IN a' this method
  must return Namepace.of("a","b") <a href="../../../../org/apache/iceberg/catalog/Namespace.html" title="class in org.apache.iceberg.catalog"><code>Namespace</code></a>.</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>a List of namespace <a href="../../../../org/apache/iceberg/catalog/Namespace.html" title="class in org.apache.iceberg.catalog"><code>Namespace</code></a> names</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="../../../../org/apache/iceberg/exceptions/NoSuchNamespaceException.html" title="class in org.apache.iceberg.exceptions">NoSuchNamespaceException</a></code> - If the namespace does not exist (optional)</dd>
 </dl>
 </li>
 </ul>
 <a name="loadNamespaceMetadata-org.apache.iceberg.catalog.Namespace-">
 <!--   -->
 </a>
 <ul class="blockList">
 <li class="blockList">
 <h4>loadNamespaceMetadata</h4>
 <pre>java.util.Map&lt;java.lang.String,java.lang.String&gt;&nbsp;loadNamespaceMetadata(<a href="../../../../org/apache/iceberg/catalog/Namespace.html" title="class in org.apache.iceberg.catalog">Namespace</a>&nbsp;namespace)
                                                                 throws <a href="../../../../org/apache/iceberg/exceptions/NoSuchNamespaceException.html" title="class in org.apache.iceberg.exceptions">NoSuchNamespaceException</a></pre>
 <div class="block">Load metadata properties for a namespace.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>namespace</code> - a namespace. <a href="../../../../org/apache/iceberg/catalog/Namespace.html" title="class in org.apache.iceberg.catalog"><code>Namespace</code></a></dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>a string map of properties for the given namespace</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="../../../../org/apache/iceberg/exceptions/NoSuchNamespaceException.html" title="class in org.apache.iceberg.exceptions">NoSuchNamespaceException</a></code> - If the namespace does not exist (optional)</dd>
 </dl>
 </li>
 </ul>
 <a name="dropNamespace-org.apache.iceberg.catalog.Namespace-">
 <!--   -->
 </a>
 <ul class="blockList">
 <li class="blockList">
 <h4>dropNamespace</h4>
 <pre>boolean&nbsp;dropNamespace(<a href="../../../../org/apache/iceberg/catalog/Namespace.html" title="class in org.apache.iceberg.catalog">Namespace</a>&nbsp;namespace)
                throws <a href="../../../../org/apache/iceberg/exceptions/NamespaceNotEmptyException.html" title="class in org.apache.iceberg.exceptions">NamespaceNotEmptyException</a></pre>
 <div class="block">Drop a namespace. If the namespace exists and was dropped, this will return true.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>namespace</code> - a namespace. <a href="../../../../org/apache/iceberg/catalog/Namespace.html" title="class in org.apache.iceberg.catalog"><code>Namespace</code></a></dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>true if the namespace was dropped, false otherwise.</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="../../../../org/apache/iceberg/exceptions/NamespaceNotEmptyException.html" title="class in org.apache.iceberg.exceptions">NamespaceNotEmptyException</a></code> - If the namespace does not empty</dd>
 </dl>
 </li>
 </ul>
 <a name="setProperties-org.apache.iceberg.catalog.Namespace-java.util.Map-">
 <!--   -->
 </a>
 <ul class="blockList">
 <li class="blockList">
 <h4>setProperties</h4>
 <pre>boolean&nbsp;setProperties(<a href="../../../../org/apache/iceberg/catalog/Namespace.html" title="class in org.apache.iceberg.catalog">Namespace</a>&nbsp;namespace,
                       java.util.Map&lt;java.lang.String,java.lang.String&gt;&nbsp;properties)
                throws <a href="../../../../org/apache/iceberg/exceptions/NoSuchNamespaceException.html" title="class in org.apache.iceberg.exceptions">NoSuchNamespaceException</a></pre>
 <div class="block">Apply a set of metadata to a namespace in the catalog.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>namespace</code> - a namespace. <a href="../../../../org/apache/iceberg/catalog/Namespace.html" title="class in org.apache.iceberg.catalog"><code>Namespace</code></a></dd>
 <dd><code>properties</code> - a collection of metadata to apply to the namespace</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="../../../../org/apache/iceberg/exceptions/NoSuchNamespaceException.html" title="class in org.apache.iceberg.exceptions">NoSuchNamespaceException</a></code> - If the namespace does not exist (optional)</dd>
 <dd><code>java.lang.UnsupportedOperationException</code> - If namespace properties are not supported</dd>
 </dl>
 </li>
 </ul>
 <a name="removeProperties-org.apache.iceberg.catalog.Namespace-java.util.Set-">
 <!--   -->
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 <ul class="blockList">
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 <h4>removeProperties</h4>
 <pre>boolean&nbsp;removeProperties(<a href="../../../../org/apache/iceberg/catalog/Namespace.html" title="class in org.apache.iceberg.catalog">Namespace</a>&nbsp;namespace,
                          java.util.Set&lt;java.lang.String&gt;&nbsp;properties)
                   throws <a href="../../../../org/apache/iceberg/exceptions/NoSuchNamespaceException.html" title="class in org.apache.iceberg.exceptions">NoSuchNamespaceException</a></pre>
 <div class="block">Remove a set of metadata from a namespace in the catalog.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>namespace</code> - a namespace. <a href="../../../../org/apache/iceberg/catalog/Namespace.html" title="class in org.apache.iceberg.catalog"><code>Namespace</code></a></dd>
 <dd><code>properties</code> - a collection of metadata to apply to the namespace</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="../../../../org/apache/iceberg/exceptions/NoSuchNamespaceException.html" title="class in org.apache.iceberg.exceptions">NoSuchNamespaceException</a></code> - If the namespace does not exist (optional)</dd>
 <dd><code>java.lang.UnsupportedOperationException</code> - If namespace properties are not supported</dd>
 </dl>
 </li>
 </ul>
 <a name="namespaceExists-org.apache.iceberg.catalog.Namespace-">
 <!--   -->
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 <h4>namespaceExists</h4>
 <pre>default&nbsp;boolean&nbsp;namespaceExists(<a href="../../../../org/apache/iceberg/catalog/Namespace.html" title="class in org.apache.iceberg.catalog">Namespace</a>&nbsp;namespace)</pre>
 <div class="block">Checks whether the Namespace exists.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>namespace</code> - a namespace. <a href="../../../../org/apache/iceberg/catalog/Namespace.html" title="class in org.apache.iceberg.catalog"><code>Namespace</code></a></dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>true if the Namespace exists, false otherwise</dd>
 </dl>
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