--- /dev/null
+/*******************************************************************************\r
+ * Copyright (c) 2010 Association for Decentralized Information Management in\r
+ * Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ * VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.databoard;\r
+\r
+import java.io.IOException;\r
+import java.io.InputStream;\r
+import java.nio.charset.Charset;\r
+\r
+import org.simantics.databoard.binding.error.BindingConstructionException;\r
+import org.simantics.databoard.binding.error.DatatypeConstructionException;\r
+import org.simantics.databoard.binding.error.RuntimeDatatypeConstructionException;\r
+import org.simantics.databoard.binding.reflection.ClassBindingFactory;\r
+import org.simantics.databoard.binding.reflection.VoidBinding;\r
+import org.simantics.databoard.parser.repository.DataTypeRepository;\r
+import org.simantics.databoard.parser.repository.DataTypeSyntaxError;\r
+import org.simantics.databoard.type.ArrayType;\r
+import org.simantics.databoard.type.BooleanType;\r
+import org.simantics.databoard.type.ByteType;\r
+import org.simantics.databoard.type.Datatype;\r
+import org.simantics.databoard.type.DoubleType;\r
+import org.simantics.databoard.type.FloatType;\r
+import org.simantics.databoard.type.IntegerType;\r
+import org.simantics.databoard.type.LongType;\r
+import org.simantics.databoard.type.OptionalType;\r
+import org.simantics.databoard.type.StringType;\r
+import org.simantics.databoard.type.VariantType;\r
+import org.simantics.databoard.util.StreamUtil;\r
+\r
+/**\r
+ * This class is a facade to the data type services. \r
+ * \r
+ * @author Hannu Niemisto\r
+ * @author Toni Kalajainen\r
+ */\r
+public class Datatypes {\r
+ \r
+ public static final BooleanType BOOLEAN = new BooleanType();\r
+ public static final ByteType BYTE = new ByteType();\r
+ public static final IntegerType INTEGER = new IntegerType();\r
+ public static final LongType LONG = new LongType();\r
+ public static final FloatType FLOAT = new FloatType();\r
+ public static final DoubleType DOUBLE = new DoubleType();\r
+ public static final StringType STRING = new StringType();\r
+ public static final VariantType VARIANT = new VariantType();\r
+ \r
+ public static final Datatype VOID = VoidBinding.VOID_BINDING.type();\r
+\r
+ public static final ArrayType BOOLEAN_ARRAY = new ArrayType( BOOLEAN );\r
+ public static final ArrayType BYTE_ARRAY = new ArrayType( BYTE );\r
+ public static final ArrayType INTEGER_ARRAY = new ArrayType( INTEGER );\r
+ public static final ArrayType LONG_ARRAY = new ArrayType( LONG );\r
+ public static final ArrayType FLOAT_ARRAY = new ArrayType( FLOAT );\r
+ public static final ArrayType DOUBLE_ARRAY = new ArrayType( DOUBLE );\r
+ public static final ArrayType STRING_ARRAY = new ArrayType( STRING );\r
+ public static final ArrayType VARIANT_ARRAY = new ArrayType( VARIANT );\r
+ \r
+ public static final DataTypeRepository datatypeRepository = new DataTypeRepository();\r
+\r
+ /** Make type optional */\r
+ public static Datatype optional( Datatype type ) { return new OptionalType( type ); }\r
+ \r
+ /**\r
+ * Read representation from a class. DataType details and parameters\r
+ * are read as annotations placed in the class. \r
+ * (See org.simantics.databoard.annotations) \r
+ * <p>\r
+ * As an exception, in the subclasses of {@link Throwable}, the fields of\r
+ * Throwable are omited.\r
+ * \r
+ * @see ClassBindingFactory \r
+ * @param clazz\r
+ * @return data type\r
+ * @throws DatatypeConstructionException \r
+ */\r
+ @SuppressWarnings("unchecked")\r
+ public static <T extends Datatype> T getDatatype(Class<?> clazz) \r
+ throws DatatypeConstructionException {\r
+ try {\r
+ return (T) Bindings.getBinding(clazz).type();\r
+ } catch (BindingConstructionException e) {\r
+ throw new DatatypeConstructionException(e);\r
+ }\r
+ }\r
+ \r
+ /**\r
+ * Read representation from a class. DataType details and parameters\r
+ * are read as annotations placed in the class. \r
+ * (See org.simantics.databoard.annotations) \r
+ * <p>\r
+ * This method is used when the caller is 100% sure that binding will be \r
+ * constructed without exceptions. Such classes\r
+ * are all primitive types (Double, Integer, etc, arrays, DataType, ...)\r
+ * \r
+ * This method is unchecked if binding construction to the clazz cannot be trusted.\r
+ * If construction fails, a RuntimeException is thrown.\r
+ * \r
+ * @see ClassBindingFactory \r
+ * @param clazz\r
+ * @return data type\r
+ * @throws RuntimeDatatypeConstructionException \r
+ */\r
+ @SuppressWarnings("unchecked")\r
+ public static <T extends Datatype> T getDatatypeUnchecked(Class<?> clazz) \r
+ throws RuntimeDatatypeConstructionException {\r
+ try {\r
+ return (T) Bindings.getBinding(clazz).type();\r
+ } catch (BindingConstructionException e) {\r
+ throw new RuntimeDatatypeConstructionException(new DatatypeConstructionException(e));\r
+ }\r
+ } \r
+ \r
+ /**\r
+ * Adds a type to the repository.\r
+ * \r
+ * @param name Name of the type\r
+ * @param type Type to be added\r
+ */\r
+ public static void addDatatype(String name, Datatype type) {\r
+ datatypeRepository.add(name, type);\r
+ }\r
+ \r
+ /**\r
+ * Get data type by name.\r
+ * \r
+ * e.g. get("Vec2");\r
+ * \r
+ * @param name\r
+ * @return data type\r
+ */\r
+ public static Datatype getDatatype(String name) {\r
+ return datatypeRepository.get(name);\r
+ } \r
+ \r
+ /**\r
+ * Parses and adds type definitions to the repository.\r
+ * \r
+ * The data type can be acquired with #getType\r
+ * \r
+ * e.g. "type Vec2 = { x : Double, y : Double }"\r
+ * \r
+ * @param definitions Definitions in textual format.\r
+ * @throws DataTypeSyntaxError \r
+ */\r
+ public static void addDefinitions(String definitions) throws DataTypeSyntaxError {\r
+ datatypeRepository.addDefinitions(definitions);\r
+ }\r
+ \r
+ /**\r
+ * Parses an unnamed data type.\r
+ * \r
+ * <a href="http://dev.simantics.org/index.php/Data_type_notation">Datatype Notation</a>\r
+ * \r
+ * e.g. "{ direction : Vec, vector : Vec2 }" \r
+ * \r
+ * @param typeString The textual representation of the type to be translated\r
+ * @return Translated data type\r
+ * @throws DataTypeSyntaxError \r
+ */\r
+ public static Datatype translate(String typeString) throws DataTypeSyntaxError {\r
+ return datatypeRepository.translate(typeString);\r
+ } \r
+\r
+ static {\r
+ Charset UTF8 = Charset.forName("UTF-8");\r
+ \r
+ // Read File\r
+ InputStream is = Datatypes.class.getResourceAsStream("standardTypes.dbt");\r
+ try {\r
+ String defs = StreamUtil.readString(is, UTF8);\r
+ Datatypes.datatypeRepository.addDefinitions(defs); \r
+ } catch (IOException e) {\r
+ throw new RuntimeException( e );\r
+ } catch (DataTypeSyntaxError e) {\r
+ throw new RuntimeException( e );\r
+ } finally {\r
+ try { is.close(); } catch (IOException e) {}\r
+ }\r
+ \r
+ }\r
+ \r
+}\r
+\r
+\r
Code Review / simantics / platform.git / blobdiff