From 4e794b5ed03e5020770becb068d11e6838feec64 Mon Sep 17 00:00:00 2001
From: Trygve Laugstøl <trygvis@inamo.no>
Date: Fri, 2 Aug 2013 21:57:54 +0200
Subject: wip

---
 .../trygvis/container/compiler/EntityHandler.java  | 83 ++++++++++++++++++++++
 1 file changed, 83 insertions(+)
 create mode 100644 container-compiler-plugin/src/main/java/io/trygvis/container/compiler/EntityHandler.java

(limited to 'container-compiler-plugin/src/main/java/io/trygvis/container/compiler/EntityHandler.java')

diff --git a/container-compiler-plugin/src/main/java/io/trygvis/container/compiler/EntityHandler.java b/container-compiler-plugin/src/main/java/io/trygvis/container/compiler/EntityHandler.java
new file mode 100644
index 0000000..df7a673
--- /dev/null
+++ b/container-compiler-plugin/src/main/java/io/trygvis/container/compiler/EntityHandler.java
@@ -0,0 +1,83 @@
+package io.trygvis.container.compiler;
+
+import io.trygvis.container.compiler.entity.EntityMirror;
+import io.trygvis.container.compiler.model.ClassG;
+import io.trygvis.container.compiler.model.Parameters;
+
+import javax.annotation.processing.ProcessingEnvironment;
+import javax.lang.model.element.TypeElement;
+import javax.lang.model.element.VariableElement;
+import javax.tools.JavaFileObject;
+import java.io.PrintWriter;
+import java.util.ArrayList;
+import java.util.List;
+
+import static io.trygvis.container.compiler.entity.EntityMirror.FieldMirror;
+import static java.lang.Character.isUpperCase;
+import static javax.lang.model.util.ElementFilter.fieldsIn;
+import static org.springframework.util.StringUtils.collectionToDelimitedString;
+
+public class EntityHandler extends AbstractHandler {
+    public EntityHandler(ProcessingEnvironment processingEnv) {
+        super(processingEnv);
+    }
+
+    public void processEntity(TypeElement element) throws Exception {
+        EntityMirror entityMirror = new EntityMirror(sqlName(element.getSimpleName().toString()));
+
+        for (VariableElement f : fieldsIn(elements.getAllMembers(element))) {
+            entityMirror.add(fromElement(f));
+        }
+
+        String p = elements.getPackageOf(element).getQualifiedName().toString();
+        String className = element.getSimpleName() + "_Sql";
+
+        ClassG g = new ClassG(p, className, null);
+        g.addPublicFinalField(String.class, "insertInto");
+        String insertInto = insertInto(entityMirror);
+        List<String> body = new ArrayList<>();
+        body.add("this.insertInto = \"" + insertInto + "\";");
+        g.addConstructor(new Parameters(), body);
+
+        String fileName = (p.length() == 0 ? "" : p + ".") + className;
+        JavaFileObject sourceFile = processingEnv.getFiler().createSourceFile(fileName, element);
+        try (PrintWriter w = new PrintWriter(sourceFile.openWriter())) {
+            g.write(w);
+        }
+    }
+
+    public static String insertInto(EntityMirror entityMirror) {
+        List<String> names = new ArrayList<>();
+        List<String> placeholders = new ArrayList<>();
+        for (FieldMirror field : entityMirror.fields) {
+            names.add(field.sqlName);
+            placeholders.add("?");
+        }
+        return "INSERT INTO " + entityMirror.tableName + "(" + collectionToDelimitedString(names, ", ") + ") " +
+                "VALUES(" + collectionToDelimitedString(placeholders, ", ") + ");";
+    }
+
+    public FieldMirror fromElement(VariableElement var) {
+        System.out.println("io.trygvis.container.compiler.entity.EntityMirror.FieldMirror.fromElement");
+        System.out.print("element = ");
+        elements.printElements(new PrintWriter(System.out), var);
+        String javaName = var.getSimpleName().toString();
+        String sqlName = sqlName(javaName);
+        boolean notNull = false;
+        FieldMirror field = new FieldMirror(javaName, sqlName, notNull);
+        System.out.println("field = " + field);
+        return field;
+    }
+
+    public static String sqlName(String javaName) {
+        StringBuilder builder = new StringBuilder();
+        for (char c : javaName.toCharArray()) {
+            char lower = Character.toLowerCase(c);
+            if(isUpperCase(c) && builder.length() > 0) {
+                builder.append("_");
+            }
+            builder.append(lower);
+        }
+        return builder.toString();
+    }
+}
-- 
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