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| <li>Summary: </li> |
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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">org.apache.iceberg.parquet</a></div> |
| <h2 title="Class ParquetSchemaUtil" class="title">Class ParquetSchemaUtil</h2> |
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| <pre>public class <span class="typeNameLabel">ParquetSchemaUtil</span> |
| extends java.lang.Object</pre> |
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| <th class="colFirst" scope="col">Modifier and Type</th> |
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| <td class="colFirst"><code>static class </code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="ParquetSchemaUtil.HasIds.html" title="class in org.apache.iceberg.parquet">ParquetSchemaUtil.HasIds</a></span></code></th> |
| <td class="colLast"> </td> |
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| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>static org.apache.parquet.schema.MessageType</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#addFallbackIds(org.apache.parquet.schema.MessageType)">addFallbackIds</a></span>​(org.apache.parquet.schema.MessageType fileSchema)</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>static org.apache.parquet.schema.MessageType</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#applyNameMapping(org.apache.parquet.schema.MessageType,org.apache.iceberg.mapping.NameMapping)">applyNameMapping</a></span>​(org.apache.parquet.schema.MessageType fileSchema, |
| <a href="../mapping/NameMapping.html" title="class in org.apache.iceberg.mapping">NameMapping</a> nameMapping)</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>static org.apache.parquet.schema.MessageType</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convert(org.apache.iceberg.Schema,java.lang.String)">convert</a></span>​(<a href="../Schema.html" title="class in org.apache.iceberg">Schema</a> schema, |
| java.lang.String name)</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>static <a href="../Schema.html" title="class in org.apache.iceberg">Schema</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convert(org.apache.parquet.schema.MessageType)">convert</a></span>​(org.apache.parquet.schema.MessageType parquetSchema)</code></th> |
| <td class="colLast"> |
| <div class="block">Converts a Parquet schema to an Iceberg schema.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>static <a href="../Schema.html" title="class in org.apache.iceberg">Schema</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertAndPrune(org.apache.parquet.schema.MessageType)">convertAndPrune</a></span>​(org.apache.parquet.schema.MessageType parquetSchema)</code></th> |
| <td class="colLast"> |
| <div class="block">Converts a Parquet schema to an Iceberg schema and prunes fields without IDs.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>static boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#hasIds(org.apache.parquet.schema.MessageType)">hasIds</a></span>​(org.apache.parquet.schema.MessageType fileSchema)</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>static org.apache.parquet.schema.MessageType</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#pruneColumns(org.apache.parquet.schema.MessageType,org.apache.iceberg.Schema)">pruneColumns</a></span>​(org.apache.parquet.schema.MessageType fileSchema, |
| <a href="../Schema.html" title="class in org.apache.iceberg">Schema</a> expectedSchema)</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>static org.apache.parquet.schema.MessageType</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#pruneColumnsFallback(org.apache.parquet.schema.MessageType,org.apache.iceberg.Schema)">pruneColumnsFallback</a></span>​(org.apache.parquet.schema.MessageType fileSchema, |
| <a href="../Schema.html" title="class in org.apache.iceberg">Schema</a> expectedSchema)</code></th> |
| <td class="colLast"> |
| <div class="block">Prunes columns from a Parquet file schema that was written without field ids.</div> |
| </td> |
| </tr> |
| </table> |
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| <!-- --> |
| </a> |
| <h3>Methods inherited from class java.lang.Object</h3> |
| <code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li> |
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| <a id="convert(org.apache.iceberg.Schema,java.lang.String)"> |
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| </a> |
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| <h4>convert</h4> |
| <pre class="methodSignature">public static org.apache.parquet.schema.MessageType convert​(<a href="../Schema.html" title="class in org.apache.iceberg">Schema</a> schema, |
| java.lang.String name)</pre> |
| </li> |
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| <h4>convert</h4> |
| <pre class="methodSignature">public static <a href="../Schema.html" title="class in org.apache.iceberg">Schema</a> convert​(org.apache.parquet.schema.MessageType parquetSchema)</pre> |
| <div class="block">Converts a Parquet schema to an Iceberg schema. Fields without IDs are kept and assigned fallback IDs.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>parquetSchema</code> - a Parquet schema</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a matching Iceberg schema for the provided Parquet schema</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="convertAndPrune(org.apache.parquet.schema.MessageType)"> |
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| <h4>convertAndPrune</h4> |
| <pre class="methodSignature">public static <a href="../Schema.html" title="class in org.apache.iceberg">Schema</a> convertAndPrune​(org.apache.parquet.schema.MessageType parquetSchema)</pre> |
| <div class="block">Converts a Parquet schema to an Iceberg schema and prunes fields without IDs.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>parquetSchema</code> - a Parquet schema</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a matching Iceberg schema for the provided Parquet schema</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="pruneColumns(org.apache.parquet.schema.MessageType,org.apache.iceberg.Schema)"> |
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| </a> |
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| <h4>pruneColumns</h4> |
| <pre class="methodSignature">public static org.apache.parquet.schema.MessageType pruneColumns​(org.apache.parquet.schema.MessageType fileSchema, |
| <a href="../Schema.html" title="class in org.apache.iceberg">Schema</a> expectedSchema)</pre> |
| </li> |
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| <a id="pruneColumnsFallback(org.apache.parquet.schema.MessageType,org.apache.iceberg.Schema)"> |
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| </a> |
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| <h4>pruneColumnsFallback</h4> |
| <pre class="methodSignature">public static org.apache.parquet.schema.MessageType pruneColumnsFallback​(org.apache.parquet.schema.MessageType fileSchema, |
| <a href="../Schema.html" title="class in org.apache.iceberg">Schema</a> expectedSchema)</pre> |
| <div class="block">Prunes columns from a Parquet file schema that was written without field ids. |
| <p> |
| Files that were written without field ids are read assuming that schema evolution preserved |
| column order. Deleting columns was not allowed. |
| <p> |
| The order of columns in the resulting Parquet schema matches the Parquet file.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>fileSchema</code> - schema from a Parquet file that does not have field ids.</dd> |
| <dd><code>expectedSchema</code> - expected schema</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a parquet schema pruned using the expected schema</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="hasIds(org.apache.parquet.schema.MessageType)"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>hasIds</h4> |
| <pre class="methodSignature">public static boolean hasIds​(org.apache.parquet.schema.MessageType fileSchema)</pre> |
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| <a id="addFallbackIds(org.apache.parquet.schema.MessageType)"> |
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| </a> |
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| <h4>addFallbackIds</h4> |
| <pre class="methodSignature">public static org.apache.parquet.schema.MessageType addFallbackIds​(org.apache.parquet.schema.MessageType fileSchema)</pre> |
| </li> |
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| <h4>applyNameMapping</h4> |
| <pre class="methodSignature">public static org.apache.parquet.schema.MessageType applyNameMapping​(org.apache.parquet.schema.MessageType fileSchema, |
| <a href="../mapping/NameMapping.html" title="class in org.apache.iceberg.mapping">NameMapping</a> nameMapping)</pre> |
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