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| <div class="subTitle">org.apache.drill.common.expression</div> |
| <h2 title="Class PathSegment" class="title">Class PathSegment</h2> |
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| <ul class="inheritance"> |
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| <li>org.apache.drill.common.expression.PathSegment</li> |
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| <dt>Direct Known Subclasses:</dt> |
| <dd><a href="../../../../../org/apache/drill/common/expression/PathSegment.ArraySegment.html" title="class in org.apache.drill.common.expression">PathSegment.ArraySegment</a>, <a href="../../../../../org/apache/drill/common/expression/PathSegment.NameSegment.html" title="class in org.apache.drill.common.expression">PathSegment.NameSegment</a></dd> |
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| <pre>public abstract class <span class="typeNameLabel">PathSegment</span> |
| extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre> |
| <div class="block">Used to represent path to nested field within schema as a chain of path segments. |
| Where each segment in the chain may be either named or array segment.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../org/apache/drill/common/expression/PathSegment.NameSegment.html" title="class in org.apache.drill.common.expression"><code>PathSegment.NameSegment</code></a>, |
| <a href="../../../../../org/apache/drill/common/expression/PathSegment.ArraySegment.html" title="class in org.apache.drill.common.expression"><code>PathSegment.ArraySegment</code></a>, |
| <a href="../../../../../org/apache/drill/common/expression/SchemaPath.html" title="class in org.apache.drill.common.expression"><code>SchemaPath</code></a></dd> |
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| <caption><span>Nested Classes</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Class and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/common/expression/PathSegment.ArraySegment.html" title="class in org.apache.drill.common.expression">PathSegment.ArraySegment</a></span></code> </td> |
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| <tr class="rowColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/common/expression/PathSegment.NameSegment.html" title="class in org.apache.drill.common.expression">PathSegment.NameSegment</a></span></code> </td> |
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| <th class="colFirst" scope="col">Modifier and Type</th> |
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| <td class="colFirst"><code>protected <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/common/expression/PathSegment.html#originalValue">originalValue</a></span></code> |
| <div class="block">Holds original value associated with the path segment.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>protected <a href="../../../../../org/apache/drill/common/types/TypeProtos.MajorType.html" title="class in org.apache.drill.common.types">TypeProtos.MajorType</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/common/expression/PathSegment.html#originalValueType">originalValueType</a></span></code> |
| <div class="block">Indicates the type of original value.</div> |
| </td> |
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| <tr> |
| <th class="colOne" scope="col">Constructor and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/common/expression/PathSegment.html#PathSegment-org.apache.drill.common.expression.PathSegment-java.lang.Object-org.apache.drill.common.types.TypeProtos.MajorType-">PathSegment</a></span>(<a href="../../../../../org/apache/drill/common/expression/PathSegment.html" title="class in org.apache.drill.common.expression">PathSegment</a> child, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> originalValue, |
| <a href="../../../../../org/apache/drill/common/types/TypeProtos.MajorType.html" title="class in org.apache.drill.common.types">TypeProtos.MajorType</a> originalValueType)</code> </td> |
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| <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>abstract <a href="../../../../../org/apache/drill/common/expression/PathSegment.html" title="class in org.apache.drill.common.expression">PathSegment</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/common/expression/PathSegment.html#clone--">clone</a></span>()</code> </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>abstract <a href="../../../../../org/apache/drill/common/expression/PathSegment.html" title="class in org.apache.drill.common.expression">PathSegment</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/common/expression/PathSegment.html#cloneWithNewChild-org.apache.drill.common.expression.PathSegment-">cloneWithNewChild</a></span>(<a href="../../../../../org/apache/drill/common/expression/PathSegment.html" title="class in org.apache.drill.common.expression">PathSegment</a> newChild)</code> |
| <div class="block">Makes copy of segment chain with <code>newChild</code> added at the end.</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/drill/common/expression/PathSegment.html#contains-org.apache.drill.common.expression.PathSegment-">contains</a></span>(<a href="../../../../../org/apache/drill/common/expression/PathSegment.html" title="class in org.apache.drill.common.expression">PathSegment</a> otherSeg)</code> |
| <div class="block">Check if another path is contained in this one.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/common/expression/PathSegment.html#equals-java.lang.Object-">equals</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> obj)</code> </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/drill/common/expression/PathSegment.ArraySegment.html" title="class in org.apache.drill.common.expression">PathSegment.ArraySegment</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/common/expression/PathSegment.html#getArraySegment--">getArraySegment</a></span>()</code> </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/drill/common/expression/PathSegment.html" title="class in org.apache.drill.common.expression">PathSegment</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/common/expression/PathSegment.html#getChild--">getChild</a></span>()</code> </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/drill/common/expression/PathSegment.NameSegment.html" title="class in org.apache.drill.common.expression">PathSegment.NameSegment</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/common/expression/PathSegment.html#getNameSegment--">getNameSegment</a></span>()</code> </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/common/expression/PathSegment.html#getOriginalValue--">getOriginalValue</a></span>()</code> </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/drill/common/types/TypeProtos.MajorType.html" title="class in org.apache.drill.common.types">TypeProtos.MajorType</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/common/expression/PathSegment.html#getOriginalValueType--">getOriginalValueType</a></span>()</code> </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/common/expression/PathSegment.html#hashCode--">hashCode</a></span>()</code> </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code>abstract boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/common/expression/PathSegment.html#isArray--">isArray</a></span>()</code> </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/common/expression/PathSegment.html#isLastPath--">isLastPath</a></span>()</code> </td> |
| </tr> |
| <tr id="i12" class="altColor"> |
| <td class="colFirst"><code>abstract boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/common/expression/PathSegment.html#isNamed--">isNamed</a></span>()</code> </td> |
| </tr> |
| <tr id="i13" class="rowColor"> |
| <td class="colFirst"><code>protected abstract boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/common/expression/PathSegment.html#segmentEquals-org.apache.drill.common.expression.PathSegment-">segmentEquals</a></span>(<a href="../../../../../org/apache/drill/common/expression/PathSegment.html" title="class in org.apache.drill.common.expression">PathSegment</a> other)</code> </td> |
| </tr> |
| <tr id="i14" class="altColor"> |
| <td class="colFirst"><code>protected abstract int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/common/expression/PathSegment.html#segmentHashCode--">segmentHashCode</a></span>()</code> </td> |
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| <h3>Methods inherited from class java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3> |
| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li> |
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| <h4>originalValue</h4> |
| <pre>protected final <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> originalValue</pre> |
| <div class="block">Holds original value associated with the path segment. |
| Used when reading data from DICT.</div> |
| </li> |
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| <pre>protected final <a href="../../../../../org/apache/drill/common/types/TypeProtos.MajorType.html" title="class in org.apache.drill.common.types">TypeProtos.MajorType</a> originalValueType</pre> |
| <div class="block">Indicates the type of original value.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../org/apache/drill/common/expression/PathSegment.html#originalValue"><code>originalValue</code></a></dd> |
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| <h4>PathSegment</h4> |
| <pre>public PathSegment(<a href="../../../../../org/apache/drill/common/expression/PathSegment.html" title="class in org.apache.drill.common.expression">PathSegment</a> child, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> originalValue, |
| <a href="../../../../../org/apache/drill/common/types/TypeProtos.MajorType.html" title="class in org.apache.drill.common.types">TypeProtos.MajorType</a> originalValueType)</pre> |
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| <pre>public abstract <a href="../../../../../org/apache/drill/common/expression/PathSegment.html" title="class in org.apache.drill.common.expression">PathSegment</a> cloneWithNewChild(<a href="../../../../../org/apache/drill/common/expression/PathSegment.html" title="class in org.apache.drill.common.expression">PathSegment</a> newChild)</pre> |
| <div class="block">Makes copy of segment chain with <code>newChild</code> added at the end.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>newChild</code> - new child to add</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>full copy of segment chain with new child added at the end of chain</dd> |
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| <h4>clone</h4> |
| <pre>public abstract <a href="../../../../../org/apache/drill/common/expression/PathSegment.html" title="class in org.apache.drill.common.expression">PathSegment</a> clone()</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a></code> in class <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></code></dd> |
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| <pre>public boolean contains(<a href="../../../../../org/apache/drill/common/expression/PathSegment.html" title="class in org.apache.drill.common.expression">PathSegment</a> otherSeg)</pre> |
| <div class="block">Check if another path is contained in this one. This is useful for 2 cases. The first |
| is checking if the other is lower down in the tree, below this path. The other is if |
| a path is actually contained above the current one. |
| |
| Examples: |
| [a] . contains( [a.b.c] ) returns true |
| [a.b.c] . contains( [a] ) returns true |
| |
| This behavior is used for cases like scanning json in an event based fashion, when we arrive at |
| a node in a complex type, we will know the complete path back to the root. This method can |
| be used to determine if we need the data below. This is true in both the cases where the |
| column requested from the user is below the current node (in which case we may ignore other nodes |
| further down the tree, while keeping others). This is also the case if the requested path is further |
| up the tree, if we know we are at position a.b.c and a.b was a requested column, we need to scan |
| all of the data at and below the current a.b.c node.</div> |
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| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>otherSeg</code> - - path segment to check if it is contained below this one.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>- is this a match</dd> |
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