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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">org.apache.cayenne</a></div> |
| <h2 title="Interface ResultIterator" class="title">Interface ResultIterator<T></h2> |
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| <dt>All Superinterfaces:</dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true" title="class or interface in java.lang" class="externalLink">AutoCloseable</a></code>, <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang" class="externalLink">Iterable</a><T></code></dd> |
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| <dt>All Known Implementing Classes:</dt> |
| <dd><code><a href="access/jdbc/ConnectionAwareResultIterator.html" title="class in org.apache.cayenne.access.jdbc">ConnectionAwareResultIterator</a></code>, <code><a href="access/jdbc/DistinctResultIterator.html" title="class in org.apache.cayenne.access.jdbc">DistinctResultIterator</a></code>, <code><a href="access/jdbc/JDBCResultIterator.html" title="class in org.apache.cayenne.access.jdbc">JDBCResultIterator</a></code>, <code><a href="access/jdbc/LimitResultIterator.html" title="class in org.apache.cayenne.access.jdbc">LimitResultIterator</a></code></dd> |
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| <hr> |
| <pre>public interface <span class="typeNameLabel">ResultIterator<T></span> |
| extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang" class="externalLink">Iterable</a><T>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true" title="class or interface in java.lang" class="externalLink">AutoCloseable</a></pre> |
| <div class="block">Defines API of an iterator over the records returned as a result of |
| Select queries execution. Usually a ResultIterator is supported by an open |
| java.sql.ResultSet, therefore ResultIterators must be explicitly closed when |
| the user is done working with them. An alternative to that is |
| <a href="ObjectContext.html#iterate(org.apache.cayenne.query.Select,org.apache.cayenne.ResultIteratorCallback)"><code>ObjectContext.iterate(org.apache.cayenne.query.Select, ResultIteratorCallback)</code></a> |
| method that handles resource management.</div> |
| <dl> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>3.0</dd> |
| </dl> |
| </li> |
| </ul> |
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| <h3>Method Summary</h3> |
| <table class="memberSummary"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Method</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink">List</a><<a href="ResultIterator.html" title="type parameter in ResultIterator">T</a>></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#allRows()">allRows</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns all yet unread rows from ResultSet without closing it.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#close()">close</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Closes ResultIterator and associated ResultSet.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#hasNextRow()">hasNextRow</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns true if there is at least one more record that can be read from |
| the iterator.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code><a href="ResultIterator.html" title="type parameter in ResultIterator">T</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#nextRow()">nextRow</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the next result row that is, depending on the query, may be a |
| scalar value, a DataRow, or an Object[] array containing a mix of scalars |
| and DataRows.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#skipRow()">skipRow</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Goes past current row.</div> |
| </td> |
| </tr> |
| </table> |
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| <h3>Methods inherited from interface java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang" class="externalLink">Iterable</a></h3> |
| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true#forEach(java.util.function.Consumer)" title="class or interface in java.lang" class="externalLink">forEach</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true#iterator()" title="class or interface in java.lang" class="externalLink">iterator</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true#spliterator()" title="class or interface in java.lang" class="externalLink">spliterator</a></code></li> |
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| </section> |
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| <a id="allRows()"> |
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| <h4>allRows</h4> |
| <pre class="methodSignature"><a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink">List</a><<a href="ResultIterator.html" title="type parameter in ResultIterator">T</a>> allRows()</pre> |
| <div class="block">Returns all yet unread rows from ResultSet without closing it.</div> |
| <dl> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>3.0</dd> |
| </dl> |
| </li> |
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| <h4>hasNextRow</h4> |
| <pre class="methodSignature">boolean hasNextRow()</pre> |
| <div class="block">Returns true if there is at least one more record that can be read from |
| the iterator.</div> |
| </li> |
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| <h4>nextRow</h4> |
| <pre class="methodSignature"><a href="ResultIterator.html" title="type parameter in ResultIterator">T</a> nextRow()</pre> |
| <div class="block">Returns the next result row that is, depending on the query, may be a |
| scalar value, a DataRow, or an Object[] array containing a mix of scalars |
| and DataRows.</div> |
| <dl> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>3.0</dd> |
| </dl> |
| </li> |
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| <!-- --> |
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| <h4>skipRow</h4> |
| <pre class="methodSignature">void skipRow()</pre> |
| <div class="block">Goes past current row. If the row is not needed, this may save some time |
| on data conversion.</div> |
| <dl> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>3.0</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="close()"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>close</h4> |
| <pre class="methodSignature">void close()</pre> |
| <div class="block">Closes ResultIterator and associated ResultSet. This method must be |
| called explicitly when the user is finished processing the records. |
| Otherwise unused database resources will not be released properly.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true#close()" title="class or interface in java.lang" class="externalLink">close</a></code> in interface <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true" title="class or interface in java.lang" class="externalLink">AutoCloseable</a></code></dd> |
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