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| <h2 title="Interface WritableStringMetadataCache" class="title">Interface WritableStringMetadataCache</h2> |
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| <pre>public interface <span class="typeNameLabel">WritableStringMetadataCache</span> |
| extends <a href="../../../../../org/apache/storm/metricstore/rocksdb/ReadOnlyStringMetadataCache.html" title="interface in org.apache.storm.metricstore.rocksdb">ReadOnlyStringMetadataCache</a></pre> |
| <div class="block"><p>The writable interface to a StringMetadataCache intended to be used by a single RocksDBMetricwWriter instance. This class is not thread safe.</p></div> |
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| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util">Set</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.Entry.html?is-external=true" title="class or interface in java.util">Map.Entry</a><<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>,org.apache.storm.metricstore.rocksdb.StringMetadata>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/metricstore/rocksdb/WritableStringMetadataCache.html#entrySet--">entrySet</a></span>()</code> |
| <div class="block">Get the map of the cache contents.</div> |
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| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/metricstore/rocksdb/WritableStringMetadataCache.html#put-java.lang.String-org.apache.storm.metricstore.rocksdb.StringMetadata-boolean-">put</a></span>(<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> s, |
| org.apache.storm.metricstore.rocksdb.StringMetadata stringMetadata, |
| boolean newEntry)</code> |
| <div class="block">Add the string metadata to the cache.</div> |
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| <code><a href="../../../../../org/apache/storm/metricstore/rocksdb/ReadOnlyStringMetadataCache.html#contains-java.lang.Integer-">contains</a>, <a href="../../../../../org/apache/storm/metricstore/rocksdb/ReadOnlyStringMetadataCache.html#get-java.lang.String-">get</a>, <a href="../../../../../org/apache/storm/metricstore/rocksdb/ReadOnlyStringMetadataCache.html#getMetadataString-java.lang.Integer-">getMetadataString</a></code></li> |
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| <h4>put</h4> |
| <pre>void put(<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> s, |
| org.apache.storm.metricstore.rocksdb.StringMetadata stringMetadata, |
| boolean newEntry) |
| throws <a href="../../../../../org/apache/storm/metricstore/MetricException.html" title="class in org.apache.storm.metricstore">MetricException</a></pre> |
| <div class="block"><p>Add the string metadata to the cache.</p><p><p>NOTE: this can cause data to be evicted from the cache when full. When this occurs, the evictionCallback() method is called to store the metadata back into the RocksDB database.</p><p><p>This method is only exposed to the WritableStringMetadataCache interface.</p></div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>s</code> - The string to add</dd> |
| <dd><code>stringMetadata</code> - The string’s metadata</dd> |
| <dd><code>newEntry</code> - Indicates the metadata is being used for the first time and should be written to RocksDB immediately</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../../org/apache/storm/metricstore/MetricException.html" title="class in org.apache.storm.metricstore">MetricException</a></code> - when evicted data fails to save to the database or when the database is shutdown</dd> |
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| <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util">Set</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.Entry.html?is-external=true" title="class or interface in java.util">Map.Entry</a><<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>,org.apache.storm.metricstore.rocksdb.StringMetadata>> entrySet()</pre> |
| <div class="block"><p>Get the map of the cache contents. Provided to allow writing the data to RocksDB on shutdown.</p></div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the string metadata map entrySet</dd> |
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