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Posted to commits@isis.apache.org by da...@apache.org on 2017/12/07 15:01:00 UTC

[isis] 04/18: ISIS-1784: adds TeardownFixtureAbstract and TeardownFixtureAbstract2, as ready-to-use fixture scripts to delete all instances of an entity

This is an automated email from the ASF dual-hosted git repository.

danhaywood pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/isis.git

commit 2f077b902354818edd6e3a1c96bc4e1901b1948e
Author: Dan Haywood <da...@haywood-associates.co.uk>
AuthorDate: Mon Dec 4 08:41:35 2017 +0000

    ISIS-1784: adds TeardownFixtureAbstract and TeardownFixtureAbstract2, as ready-to-use fixture scripts to delete all instances of an entity
---
 .../teardown/TeardownFixtureAbstract.java          |  68 +++++++++
 .../teardown/TeardownFixtureAbstract2.java         | 152 +++++++++++++++++++++
 2 files changed, 220 insertions(+)

diff --git a/core/applib/src/main/java/org/apache/isis/applib/fixturescripts/teardown/TeardownFixtureAbstract.java b/core/applib/src/main/java/org/apache/isis/applib/fixturescripts/teardown/TeardownFixtureAbstract.java
new file mode 100644
index 0000000..319d3a8
--- /dev/null
+++ b/core/applib/src/main/java/org/apache/isis/applib/fixturescripts/teardown/TeardownFixtureAbstract.java
@@ -0,0 +1,68 @@
+/*
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you 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 org.apache.isis.applib.fixturescripts.teardown;
+
+import javax.inject.Inject;
+import javax.jdo.metadata.TypeMetadata;
+
+import com.google.common.base.Strings;
+
+import org.apache.isis.applib.fixturescripts.FixtureScript;
+import org.apache.isis.applib.services.jdosupport.IsisJdoSupport;
+
+public abstract class TeardownFixtureAbstract extends FixtureScript {
+
+    protected void deleteFrom(final Class cls) {
+        preDeleteFrom(cls);
+        final TypeMetadata metadata = isisJdoSupport.getJdoPersistenceManager().getPersistenceManagerFactory()
+                .getMetadata(cls.getName());
+        if(metadata == null) {
+            // fall-back
+            deleteFrom(cls.getSimpleName());
+        } else {
+            final String schema = metadata.getSchema();
+            String table = metadata.getTable();
+            if(Strings.isNullOrEmpty(table)) {
+                table = cls.getSimpleName();
+            }
+            if(Strings.isNullOrEmpty(schema)) {
+                deleteFrom(table);
+            } else {
+                deleteFrom(schema, table);
+            }
+        }
+        postDeleteFrom(cls);
+    }
+
+    protected Integer deleteFrom(final String schema, final String table) {
+        return isisJdoSupport.executeUpdate(String.format("DELETE FROM \"%s\".\"%s\"", schema, table));
+    }
+
+    protected void deleteFrom(final String table) {
+        isisJdoSupport.executeUpdate(String.format("DELETE FROM \"%s\"", table));
+    }
+
+    protected void preDeleteFrom(final Class cls) {}
+
+    protected void postDeleteFrom(final Class cls) {}
+
+    @Inject
+    private IsisJdoSupport isisJdoSupport;
+
+}
diff --git a/core/applib/src/main/java/org/apache/isis/applib/fixturescripts/teardown/TeardownFixtureAbstract2.java b/core/applib/src/main/java/org/apache/isis/applib/fixturescripts/teardown/TeardownFixtureAbstract2.java
new file mode 100644
index 0000000..c40dc67
--- /dev/null
+++ b/core/applib/src/main/java/org/apache/isis/applib/fixturescripts/teardown/TeardownFixtureAbstract2.java
@@ -0,0 +1,152 @@
+/*
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you 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 org.apache.isis.applib.fixturescripts.teardown;
+
+import javax.inject.Inject;
+import javax.jdo.PersistenceManagerFactory;
+import javax.jdo.annotations.DiscriminatorStrategy;
+import javax.jdo.annotations.InheritanceStrategy;
+import javax.jdo.metadata.DiscriminatorMetadata;
+import javax.jdo.metadata.InheritanceMetadata;
+import javax.jdo.metadata.TypeMetadata;
+
+import com.google.common.base.Strings;
+
+import org.apache.isis.applib.services.jdosupport.IsisJdoSupport;
+
+public abstract class TeardownFixtureAbstract2 extends TeardownFixtureAbstract {
+
+
+    @Override
+    protected void deleteFrom(Class cls) {
+        final String column = discriminatorColumnOf(cls);
+        final String value = discriminatorValueOf(cls);
+        if(column == null || value == null) {
+            superDeleteFrom(cls);
+            return;
+        }
+        final String schema = schemaOf(cls);
+        final String table = tableOf(cls);
+
+        this.preDeleteFrom(cls);
+        if (Strings.isNullOrEmpty(schema)) {
+            this.deleteFromWhere(table, column, value);
+        } else {
+            this.deleteFromWhere(schema, table, column, value);
+        }
+        this.postDeleteFrom(cls);
+    }
+
+    protected String schemaOf(final Class cls) {
+        TypeMetadata metadata = getPersistenceManagerFactory().getMetadata(cls.getName());
+        if(metadata == null) {
+            return null;
+        }
+        final InheritanceMetadata inheritanceMetadata = metadata.getInheritanceMetadata();
+        if(inheritanceMetadata != null && inheritanceMetadata.getStrategy() == InheritanceStrategy.SUPERCLASS_TABLE) {
+            return schemaOf(cls.getSuperclass());
+        }
+        return metadata.getSchema();
+    }
+
+    protected String tableOf(final Class cls) {
+        final TypeMetadata metadata = getPersistenceManagerFactory().getMetadata(cls.getName());
+        if(metadata == null) {
+            return cls.getSimpleName();
+        }
+        final InheritanceMetadata inheritanceMetadata = metadata.getInheritanceMetadata();
+        if(inheritanceMetadata != null && inheritanceMetadata.getStrategy() == InheritanceStrategy.SUPERCLASS_TABLE) {
+            return tableOf(cls.getSuperclass());
+        }
+        final String table = metadata.getTable();
+        return !Strings.isNullOrEmpty(table) ? table : cls.getSimpleName();
+    }
+
+    protected String discriminatorValueOf(final Class cls) {
+        TypeMetadata metadata = getPersistenceManagerFactory().getMetadata(cls.getName());
+        if(metadata == null) {
+            return null;
+        }
+        final InheritanceMetadata inheritanceMetadata = metadata.getInheritanceMetadata();
+        if(inheritanceMetadata == null ||
+                inheritanceMetadata.getStrategy() != InheritanceStrategy.SUPERCLASS_TABLE) {
+            return null;
+        }
+        final DiscriminatorMetadata discriminatorMetadata = inheritanceMetadata.getDiscriminatorMetadata();
+        if(discriminatorMetadata == null ||
+           discriminatorMetadata.getStrategy() != DiscriminatorStrategy.VALUE_MAP) {
+            return null;
+        }
+        return discriminatorMetadata.getValue();
+    }
+
+    protected String discriminatorColumnOf(final Class cls) {
+        final String discriminator = doDiscriminatorOf(cls);
+        return discriminator != null ? discriminator : "discriminator";
+    }
+
+    private String doDiscriminatorOf(final Class cls) {
+        final TypeMetadata metadata = getPersistenceManagerFactory().getMetadata(cls.getName());
+        if(metadata == null) {
+            return null;
+        }
+        final InheritanceMetadata inheritanceMetadata = metadata.getInheritanceMetadata();
+        if(inheritanceMetadata == null ||
+                inheritanceMetadata.getStrategy() != InheritanceStrategy.SUPERCLASS_TABLE) {
+            return null;
+        }
+        final DiscriminatorMetadata discriminatorMetadata = inheritanceMetadata.getDiscriminatorMetadata();
+        if(discriminatorMetadata == null ||
+           discriminatorMetadata.getStrategy() != DiscriminatorStrategy.VALUE_MAP) {
+            return null;
+        }
+        return discriminatorMetadata.getColumn();
+    }
+
+    private PersistenceManagerFactory getPersistenceManagerFactory() {
+        return isisJdoSupport.getJdoPersistenceManager().getPersistenceManagerFactory();
+    }
+
+    private void superDeleteFrom(final Class cls) {
+        super.deleteFrom(cls);
+    }
+
+    protected Integer deleteFromWhere(String schema, String table, String column, String value) {
+        final String sql = String.format(
+                "DELETE FROM \"%s\".\"%s\" WHERE \"%s\"='%s'",
+                schema, table, column, value);
+        return this.isisJdoSupport.executeUpdate(sql);
+    }
+
+    protected void deleteFromWhere(String table, String column, String value) {
+        final String sql = String.format(
+                "DELETE FROM \"%s\" WHERE \"%s\"='%s'",
+                table, column, value);
+        this.isisJdoSupport.executeUpdate(sql);
+    }
+
+    protected void preDeleteFrom(Class cls) {
+    }
+
+    protected void postDeleteFrom(Class cls) {
+    }
+
+    @Inject
+    protected IsisJdoSupport isisJdoSupport;
+}

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