Metadata caching - Parsed SQL and prepared statement handle caching

.gitignore

@@ -16,6 +16,7 @@ local.properties
 .classpath
 .vscode/
 .settings/
+.gradle/
 .loadpath
 
 # External tool builders

build.gradle

@@ -68,7 +68,7 @@ repositories {
 dependencies {
 	compile 'com.microsoft.azure:azure-keyvault:0.9.7',
 	'com.microsoft.azure:adal4j:1.1.3'
-
+		
 	testCompile 'junit:junit:4.12',
 	'org.junit.platform:junit-platform-console:1.0.0-M3',
 	'org.junit.platform:junit-platform-commons:1.0.0-M3',

src/main/java/com/googlecode/concurrentlinkedhashmap/EntryWeigher.java

@@ -0,0 +1,37 @@
+/*
+ * Copyright 2012 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.googlecode.concurrentlinkedhashmap;
+
+/**
+ * A class that can determine the weight of an entry. The total weight threshold
+ * is used to determine when an eviction is required.
+ *
+ * @author ben.manes@gmail.com (Ben Manes)
+ * @see <a href="http://code.google.com/p/concurrentlinkedhashmap/">
+ *      http://code.google.com/p/concurrentlinkedhashmap/</a>
+ */
+public interface EntryWeigher<K, V> {
+
+  /**
+   * Measures an entry's weight to determine how many units of capacity that
+   * the key and value consumes. An entry must consume a minimum of one unit.
+   *
+   * @param key the key to weigh
+   * @param value the value to weigh
+   * @return the entry's weight
+   */
+  int weightOf(K key, V value);
+}

src/main/java/com/googlecode/concurrentlinkedhashmap/EvictionListener.java

@@ -0,0 +1,45 @@
+/*
+ * Copyright 2010 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.googlecode.concurrentlinkedhashmap;
+
+/**
+ * A listener registered for notification when an entry is evicted. An instance
+ * may be called concurrently by multiple threads to process entries. An
+ * implementation should avoid performing blocking calls or synchronizing on
+ * shared resources.
+ * <p>
+ * The listener is invoked by {@link ConcurrentLinkedHashMap} on a caller's
+ * thread and will not block other threads from operating on the map. An
+ * implementation should be aware that the caller's thread will not expect
+ * long execution times or failures as a side effect of the listener being
+ * notified. Execution safety and a fast turn around time can be achieved by
+ * performing the operation asynchronously, such as by submitting a task to an
+ * {@link java.util.concurrent.ExecutorService}.
+ *
+ * @author ben.manes@gmail.com (Ben Manes)
+ * @see <a href="http://code.google.com/p/concurrentlinkedhashmap/">
+ *      http://code.google.com/p/concurrentlinkedhashmap/</a>
+ */
+public interface EvictionListener<K, V> {
+
+  /**
+   * A call-back notification that the entry was evicted.
+   *
+   * @param key the entry's key
+   * @param value the entry's value
+   */
+  void onEviction(K key, V value);
+}

src/main/java/com/googlecode/concurrentlinkedhashmap/LICENSE

@@ -0,0 +1,201 @@
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