Implement JPA integration

2 files changed, 128 insertions, 0 deletions

diff --git a/opendc-integration-jpa/src/main/kotlin/nl/atlarge/opendc/integration/jpa/converter/ParallelizableConverter.kt b/opendc-integration-jpa/src/main/kotlin/nl/atlarge/opendc/integration/jpa/converter/ParallelizableConverter.kt
new file mode 100644
index 00000000..11d5836e
--- /dev/null
+++ b/opendc-integration-jpa/src/main/kotlin/nl/atlarge/opendc/integration/jpa/converter/ParallelizableConverter.kt
@@ -0,0 +1,62 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2017 atlarge-research
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package nl.atlarge.opendc.integration.jpa.converter
+
+import javax.persistence.AttributeConverter
+
+/**
+ * An internal [AttributeConverter] that maps the values _PARALLEL_ and _SEQUENTIAL_ to a
+ * boolean value indicating whether a task is parallelizable.
+ *
+ * @author Fabian Mastenbroek (f.s.mastenbroek@student.tudelft.nl)
+ */
+class ParallelizableConverter : AttributeConverter<Boolean, String> {
+	/**
+	 * Converts the data stored in the database column into the
+	 * value to be stored in the entity attribute.
+	 * Note that it is the responsibility of the converter writer to
+	 * specify the correct dbData type for the corresponding column
+	 * for use by the JDBC driver: i.e., persistence providers are
+	 * not expected to do such type conversion.
+	 *
+	 * @param dbData the data from the database column to be converted
+	 * @return the converted value to be stored in the entity attribute
+	 */
+	override fun convertToEntityAttribute(dbData: String?): Boolean = when(dbData?.toUpperCase()) {
+		"SEQUENTIAL" -> false
+		"PARALLEL" -> true
+		else -> false
+	}
+
+	/**
+	 * Converts the value stored in the entity attribute into the
+	 * data representation to be stored in the database.
+	 *
+	 * @param attribute the entity attribute value to be converted
+	 * @return the converted data to be stored in the database column
+	 */
+	override fun convertToDatabaseColumn(attribute: Boolean?): String =
+		if (attribute == true) "PARALLEL" else "SEQUENTIAL"
+}
diff --git a/opendc-integration-jpa/src/main/kotlin/nl/atlarge/opendc/integration/jpa/converter/SchedulerConverter.kt b/opendc-integration-jpa/src/main/kotlin/nl/atlarge/opendc/integration/jpa/converter/SchedulerConverter.kt
new file mode 100644
index 00000000..95027440
--- /dev/null
+++ b/opendc-integration-jpa/src/main/kotlin/nl/atlarge/opendc/integration/jpa/converter/SchedulerConverter.kt
@@ -0,0 +1,66 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2017 atlarge-research
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package nl.atlarge.opendc.integration.jpa.converter
+
+import nl.atlarge.opendc.platform.scheduler.FifoScheduler
+import nl.atlarge.opendc.platform.scheduler.Scheduler
+import nl.atlarge.opendc.platform.scheduler.SrtfScheduler
+import javax.persistence.AttributeConverter
+
+/**
+ * An internal [AttributeConverter] that maps a name of a scheduler to the actual scheduler implementation.
+ * The converter currently chooses between the following two schedulers:
+ * - [FifoScheduler] (default)
+ * - [SrtfScheduler]
+ *
+ * @author Fabian Mastenbroek (f.s.mastenbroek@student.tudelft.nl)
+ */
+class SchedulerConverter : AttributeConverter<Scheduler, String> {
+	/**
+	 * Converts the data stored in the database column into the
+	 * value to be stored in the entity attribute.
+	 * Note that it is the responsibility of the converter writer to
+	 * specify the correct dbData type for the corresponding column
+	 * for use by the JDBC driver: i.e., persistence providers are
+	 * not expected to do such type conversion.
+	 *
+	 * @param dbData the data from the database column to be converted
+	 * @return the converted value to be stored in the entity attribute
+	 */
+	override fun convertToEntityAttribute(dbData: String?): Scheduler = when(dbData?.toUpperCase()) {
+		"SRTF" -> SrtfScheduler()
+		else -> FifoScheduler()
+	}
+
+	/**
+	 * Converts the value stored in the entity attribute into the
+	 * data representation to be stored in the database.
+	 *
+	 * @param attribute the entity attribute value to be converted
+	 * @return the converted data to be stored in the database column
+	 */
+	override fun convertToDatabaseColumn(attribute: Scheduler?): String =
+		attribute?.name?.toUpperCase() ?: "FIFO"
+}