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| <div class="subTitle">org.apache.beam.sdk.schemas</div> |
| <h2 title="Class CachingFactory" class="title">Class CachingFactory<CreatedT></h2> |
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| <ul class="inheritance"> |
| <li>java.lang.Object</li> |
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| <ul class="inheritance"> |
| <li>org.apache.beam.sdk.schemas.CachingFactory<CreatedT></li> |
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| <dt>All Implemented Interfaces:</dt> |
| <dd>java.io.Serializable, <a href="../../../../../org/apache/beam/sdk/schemas/Factory.html" title="interface in org.apache.beam.sdk.schemas">Factory</a><CreatedT></dd> |
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| <pre>public class <span class="typeNameLabel">CachingFactory<CreatedT></span> |
| extends java.lang.Object |
| implements <a href="../../../../../org/apache/beam/sdk/schemas/Factory.html" title="interface in org.apache.beam.sdk.schemas">Factory</a><CreatedT></pre> |
| <div class="block">A wrapper around a <a href="../../../../../org/apache/beam/sdk/schemas/Factory.html" title="interface in org.apache.beam.sdk.schemas"><code>Factory</code></a> that assumes the schema parameter never changes. |
| |
| <p><a href="../../../../../org/apache/beam/sdk/schemas/Factory.html" title="interface in org.apache.beam.sdk.schemas"><code>Factory</code></a> objects take the schema as a parameter, as often the returned type varies by |
| schema (e.g. sometimes the returned-type is a list that must be in schema-field order). However |
| in many cases it's known by the caller that the schema parameter is always the same across all |
| calls to create. In these cases we want to save the cost of Schema comparison (which can be |
| significant for larger schemas) on each lookup. This wrapper caches the value returned by the |
| inner factory, so the schema comparison only need happen on the first lookup.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../serialized-form.html#org.apache.beam.sdk.schemas.CachingFactory">Serialized Form</a></dd> |
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| <tr> |
| <th class="colOne" scope="col">Constructor and Description</th> |
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| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/schemas/CachingFactory.html#CachingFactory-org.apache.beam.sdk.schemas.Factory-">CachingFactory</a></span>(<a href="../../../../../org/apache/beam/sdk/schemas/Factory.html" title="interface in org.apache.beam.sdk.schemas">Factory</a><<a href="../../../../../org/apache/beam/sdk/schemas/CachingFactory.html" title="type parameter in CachingFactory">CreatedT</a>> innerFactory)</code> </td> |
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| <td class="colFirst"><code><a href="../../../../../org/apache/beam/sdk/schemas/CachingFactory.html" title="type parameter in CachingFactory">CreatedT</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/schemas/CachingFactory.html#create-java.lang.Class-org.apache.beam.sdk.schemas.Schema-">create</a></span>(java.lang.Class<?> clazz, |
| <a href="../../../../../org/apache/beam/sdk/schemas/Schema.html" title="class in org.apache.beam.sdk.schemas">Schema</a> schema)</code> </td> |
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| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/schemas/CachingFactory.html#equals-java.lang.Object-">equals</a></span>(<a href="https://static.javadoc.io/org.checkerframework/checker-qual/3.10.0/org/checkerframework/checker/nullness/qual/Nullable.html?is-external=true" title="class or interface in org.checkerframework.checker.nullness.qual">@Nullable</a> java.lang.Object o)</code> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/schemas/CachingFactory.html#hashCode--">hashCode</a></span>()</code> </td> |
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| <h4>CachingFactory</h4> |
| <pre>public CachingFactory(<a href="../../../../../org/apache/beam/sdk/schemas/Factory.html" title="interface in org.apache.beam.sdk.schemas">Factory</a><<a href="../../../../../org/apache/beam/sdk/schemas/CachingFactory.html" title="type parameter in CachingFactory">CreatedT</a>> innerFactory)</pre> |
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| <h4>create</h4> |
| <pre>public <a href="../../../../../org/apache/beam/sdk/schemas/CachingFactory.html" title="type parameter in CachingFactory">CreatedT</a> create(java.lang.Class<?> clazz, |
| <a href="../../../../../org/apache/beam/sdk/schemas/Schema.html" title="class in org.apache.beam.sdk.schemas">Schema</a> schema)</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../org/apache/beam/sdk/schemas/Factory.html#create-java.lang.Class-org.apache.beam.sdk.schemas.Schema-">create</a></code> in interface <code><a href="../../../../../org/apache/beam/sdk/schemas/Factory.html" title="interface in org.apache.beam.sdk.schemas">Factory</a><<a href="../../../../../org/apache/beam/sdk/schemas/CachingFactory.html" title="type parameter in CachingFactory">CreatedT</a>></code></dd> |
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