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| <div class="subTitle">org.apache.drill.exec.store.easy.json.loader</div> |
| <h2 title="Class FieldDefn" class="title">Class FieldDefn</h2> |
| </div> |
| <div class="contentContainer"> |
| <ul class="inheritance"> |
| <li><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.drill.exec.store.easy.json.loader.FieldDefn</li> |
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| <pre>public class <span class="typeNameLabel">FieldDefn</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">Describes a new field within an object. Allows the listener to control |
| how to handle the field: as unprojected, parsed as a typed field, as |
| text, as JSON, or as a custom parser.</div> |
| </li> |
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| <h3>Constructor Summary</h3> |
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| <caption><span>Constructors</span><span class="tabEnd"> </span></caption> |
| <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/exec/store/easy/json/loader/FieldDefn.html#FieldDefn-org.apache.drill.exec.store.easy.json.loader.TupleParser-java.lang.String-org.apache.drill.exec.store.easy.json.parser.TokenIterator-">FieldDefn</a></span>(<a href="../../../../../../../../org/apache/drill/exec/store/easy/json/loader/TupleParser.html" title="class in org.apache.drill.exec.store.easy.json.loader">TupleParser</a> tupleParser, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> key, |
| <a href="../../../../../../../../org/apache/drill/exec/store/easy/json/parser/TokenIterator.html" title="class in org.apache.drill.exec.store.easy.json.parser">TokenIterator</a> tokenizer)</code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/store/easy/json/loader/FieldDefn.html#FieldDefn-org.apache.drill.exec.store.easy.json.loader.TupleParser-java.lang.String-org.apache.drill.exec.store.easy.json.parser.TokenIterator-boolean-">FieldDefn</a></span>(<a href="../../../../../../../../org/apache/drill/exec/store/easy/json/loader/TupleParser.html" title="class in org.apache.drill.exec.store.easy.json.loader">TupleParser</a> tupleParser, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> key, |
| <a href="../../../../../../../../org/apache/drill/exec/store/easy/json/parser/TokenIterator.html" title="class in org.apache.drill.exec.store.easy.json.parser">TokenIterator</a> tokenizer, |
| boolean isArray)</code> </td> |
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| </table> |
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| </ul> |
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| </a> |
| <h3>Method Summary</h3> |
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| <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="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </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><a href="../../../../../../../../org/apache/drill/exec/vector/accessor/ObjectWriter.html" title="interface in org.apache.drill.exec.vector.accessor">ObjectWriter</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/store/easy/json/loader/FieldDefn.html#fieldWriterFor-org.apache.drill.exec.record.metadata.ColumnMetadata-">fieldWriterFor</a></span>(<a href="../../../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.html" title="interface in org.apache.drill.exec.record.metadata">ColumnMetadata</a> colSchema)</code> </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/store/easy/json/loader/FieldDefn.html#key--">key</a></span>()</code> |
| <div class="block">Returns the field name.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../../../../org/apache/drill/exec/store/easy/json/parser/ValueDef.html" title="class in org.apache.drill.exec.store.easy.json.parser">ValueDef</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/store/easy/json/loader/FieldDefn.html#lookahead--">lookahead</a></span>()</code> |
| <div class="block">Looks ahead to guess the field type based on JSON tokens.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../../../../org/apache/drill/common/types/TypeProtos.DataMode.html" title="enum in org.apache.drill.common.types">TypeProtos.DataMode</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/store/easy/json/loader/FieldDefn.html#mode-boolean-">mode</a></span>(boolean isArray)</code> </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../../../../org/apache/drill/exec/store/easy/json/parser/JsonStructureParser.html" title="class in org.apache.drill.exec.store.easy.json.parser">JsonStructureParser</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/store/easy/json/loader/FieldDefn.html#parser--">parser</a></span>()</code> |
| <div class="block">Returns the parent parser which is needed to construct standard |
| parsers.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.html" title="interface in org.apache.drill.exec.record.metadata">ColumnMetadata</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/store/easy/json/loader/FieldDefn.html#providedColumn--">providedColumn</a></span>()</code> </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../../../../org/apache/drill/exec/vector/accessor/ScalarWriter.html" title="interface in org.apache.drill.exec.vector.accessor">ScalarWriter</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/store/easy/json/loader/FieldDefn.html#scalarWriterFor-org.apache.drill.exec.record.metadata.ColumnMetadata-">scalarWriterFor</a></span>(<a href="../../../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.html" title="interface in org.apache.drill.exec.record.metadata">ColumnMetadata</a> colSchema)</code> </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../../../../org/apache/drill/exec/vector/accessor/ScalarWriter.html" title="interface in org.apache.drill.exec.vector.accessor">ScalarWriter</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/store/easy/json/loader/FieldDefn.html#scalarWriterFor-org.apache.drill.common.types.TypeProtos.MinorType-boolean-">scalarWriterFor</a></span>(<a href="../../../../../../../../org/apache/drill/common/types/TypeProtos.MinorType.html" title="enum in org.apache.drill.common.types">TypeProtos.MinorType</a> type, |
| boolean isArray)</code> </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.html" title="interface in org.apache.drill.exec.record.metadata">ColumnMetadata</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/store/easy/json/loader/FieldDefn.html#schemaFor-org.apache.drill.common.types.TypeProtos.MinorType-boolean-">schemaFor</a></span>(<a href="../../../../../../../../org/apache/drill/common/types/TypeProtos.MinorType.html" title="enum in org.apache.drill.common.types">TypeProtos.MinorType</a> type, |
| boolean isArray)</code> </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../../../../org/apache/drill/exec/store/easy/json/parser/TokenIterator.html" title="class in org.apache.drill.exec.store.easy.json.parser">TokenIterator</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/store/easy/json/loader/FieldDefn.html#tokenizer--">tokenizer</a></span>()</code> |
| <div class="block">Token stream which allows a custom parser to look ahead |
| as needed.</div> |
| </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../../../../org/apache/drill/exec/store/easy/json/loader/TupleParser.html" title="class in org.apache.drill.exec.store.easy.json.loader">TupleParser</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/store/easy/json/loader/FieldDefn.html#tupleParser--">tupleParser</a></span>()</code> </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../../../../org/apache/drill/exec/vector/accessor/TupleWriter.html" title="interface in org.apache.drill.exec.vector.accessor">TupleWriter</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/store/easy/json/loader/FieldDefn.html#writer--">writer</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#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <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#hashCode--" title="class or interface in java.lang">hashCode</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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| <div class="details"> |
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| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
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| </a> |
| <h3>Constructor Detail</h3> |
| <a name="FieldDefn-org.apache.drill.exec.store.easy.json.loader.TupleParser-java.lang.String-org.apache.drill.exec.store.easy.json.parser.TokenIterator-"> |
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| <h4>FieldDefn</h4> |
| <pre>public FieldDefn(<a href="../../../../../../../../org/apache/drill/exec/store/easy/json/loader/TupleParser.html" title="class in org.apache.drill.exec.store.easy.json.loader">TupleParser</a> tupleParser, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> key, |
| <a href="../../../../../../../../org/apache/drill/exec/store/easy/json/parser/TokenIterator.html" title="class in org.apache.drill.exec.store.easy.json.parser">TokenIterator</a> tokenizer)</pre> |
| </li> |
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| <a name="FieldDefn-org.apache.drill.exec.store.easy.json.loader.TupleParser-java.lang.String-org.apache.drill.exec.store.easy.json.parser.TokenIterator-boolean-"> |
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| </a> |
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| <h4>FieldDefn</h4> |
| <pre>public FieldDefn(<a href="../../../../../../../../org/apache/drill/exec/store/easy/json/loader/TupleParser.html" title="class in org.apache.drill.exec.store.easy.json.loader">TupleParser</a> tupleParser, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> key, |
| <a href="../../../../../../../../org/apache/drill/exec/store/easy/json/parser/TokenIterator.html" title="class in org.apache.drill.exec.store.easy.json.parser">TokenIterator</a> tokenizer, |
| boolean isArray)</pre> |
| </li> |
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| </li> |
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| <h3>Method Detail</h3> |
| <a name="key--"> |
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| <h4>key</h4> |
| <pre>public <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> key()</pre> |
| <div class="block">Returns the field name.</div> |
| </li> |
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| <a name="tupleParser--"> |
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| <h4>tupleParser</h4> |
| <pre>public <a href="../../../../../../../../org/apache/drill/exec/store/easy/json/loader/TupleParser.html" title="class in org.apache.drill.exec.store.easy.json.loader">TupleParser</a> tupleParser()</pre> |
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| <h4>tokenizer</h4> |
| <pre>public <a href="../../../../../../../../org/apache/drill/exec/store/easy/json/parser/TokenIterator.html" title="class in org.apache.drill.exec.store.easy.json.parser">TokenIterator</a> tokenizer()</pre> |
| <div class="block">Token stream which allows a custom parser to look ahead |
| as needed. The caller must "unget" all tokens to leave the |
| tokenizer at the present location. Note that the underlying |
| Jackson parser will return text for the last token consumed, |
| even if tokens are unwound using the token iterator, so do not |
| look ahead past the first field name or value; on look ahead |
| over "static" tokens such as object and array start characters.</div> |
| </li> |
| </ul> |
| <a name="parser--"> |
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| <h4>parser</h4> |
| <pre>public <a href="../../../../../../../../org/apache/drill/exec/store/easy/json/parser/JsonStructureParser.html" title="class in org.apache.drill.exec.store.easy.json.parser">JsonStructureParser</a> parser()</pre> |
| <div class="block">Returns the parent parser which is needed to construct standard |
| parsers.</div> |
| </li> |
| </ul> |
| <a name="lookahead--"> |
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| </a> |
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| <h4>lookahead</h4> |
| <pre>public <a href="../../../../../../../../org/apache/drill/exec/store/easy/json/parser/ValueDef.html" title="class in org.apache.drill.exec.store.easy.json.parser">ValueDef</a> lookahead()</pre> |
| <div class="block">Looks ahead to guess the field type based on JSON tokens. |
| While this is helpful, it really only works if the JSON |
| is structured like a list of tuples, if the initial value is not <code>null</code>, |
| and if initial arrays are not empty. The structure parser cannot see |
| into the future beyond the first field value; the value listener for each |
| field must handle "type-deferral" if needed to handle missing or null |
| values. That is, type-consistency is a semantic task handled by the listener, |
| not a syntax task handled by the parser.</div> |
| </li> |
| </ul> |
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| </a> |
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| <h4>writer</h4> |
| <pre>public <a href="../../../../../../../../org/apache/drill/exec/vector/accessor/TupleWriter.html" title="interface in org.apache.drill.exec.vector.accessor">TupleWriter</a> writer()</pre> |
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| <pre>public <a href="../../../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.html" title="interface in org.apache.drill.exec.record.metadata">ColumnMetadata</a> providedColumn()</pre> |
| </li> |
| </ul> |
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| <h4>schemaFor</h4> |
| <pre>public <a href="../../../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.html" title="interface in org.apache.drill.exec.record.metadata">ColumnMetadata</a> schemaFor(<a href="../../../../../../../../org/apache/drill/common/types/TypeProtos.MinorType.html" title="enum in org.apache.drill.common.types">TypeProtos.MinorType</a> type, |
| boolean isArray)</pre> |
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| <pre>public <a href="../../../../../../../../org/apache/drill/common/types/TypeProtos.DataMode.html" title="enum in org.apache.drill.common.types">TypeProtos.DataMode</a> mode(boolean isArray)</pre> |
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| <h4>scalarWriterFor</h4> |
| <pre>public <a href="../../../../../../../../org/apache/drill/exec/vector/accessor/ScalarWriter.html" title="interface in org.apache.drill.exec.vector.accessor">ScalarWriter</a> scalarWriterFor(<a href="../../../../../../../../org/apache/drill/common/types/TypeProtos.MinorType.html" title="enum in org.apache.drill.common.types">TypeProtos.MinorType</a> type, |
| boolean isArray)</pre> |
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| <h4>scalarWriterFor</h4> |
| <pre>public <a href="../../../../../../../../org/apache/drill/exec/vector/accessor/ScalarWriter.html" title="interface in org.apache.drill.exec.vector.accessor">ScalarWriter</a> scalarWriterFor(<a href="../../../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.html" title="interface in org.apache.drill.exec.record.metadata">ColumnMetadata</a> colSchema)</pre> |
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| <h4>fieldWriterFor</h4> |
| <pre>public <a href="../../../../../../../../org/apache/drill/exec/vector/accessor/ObjectWriter.html" title="interface in org.apache.drill.exec.vector.accessor">ObjectWriter</a> fieldWriterFor(<a href="../../../../../../../../org/apache/drill/exec/record/metadata/ColumnMetadata.html" title="interface in org.apache.drill.exec.record.metadata">ColumnMetadata</a> colSchema)</pre> |
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