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Code Issues Releases Wiki Activity

Half measure to avoid using Class objects in CompileTimeResultSetMapper

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This commit is contained in:
Travis Burtrum 2017-06-06 22:33:51 -04:00
parent be6689aa29
commit a1ad929cf4
2 changed files with 38 additions and 16 deletions
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50
jdbcmapper/src/main/java/com/moparisthebest/jdbc/codegen/CompileTimeResultSetMapper.java
View File

@ -3,10 +3,14 @@ package com.moparisthebest.jdbc.codegen;
import com.moparisthebest.jdbc.CompilingRowToObjectMapper; import com.moparisthebest.jdbc.CompilingRowToObjectMapper;
import com.moparisthebest.jdbc.ResultSetMapper; import com.moparisthebest.jdbc.ResultSetMapper;
import javax.annotation.processing.ProcessingEnvironment;
import javax.lang.model.element.ExecutableElement; import javax.lang.model.element.ExecutableElement;
import javax.lang.model.type.ArrayType; import javax.lang.model.type.ArrayType;
import javax.lang.model.type.DeclaredType; import javax.lang.model.type.DeclaredType;
import javax.lang.model.type.TypeKind;
import javax.lang.model.type.TypeMirror; import javax.lang.model.type.TypeMirror;
import javax.lang.model.util.Elements;
import javax.lang.model.util.Types;
import java.io.IOException; import java.io.IOException;
import java.io.Writer; import java.io.Writer;
import java.lang.reflect.Type; import java.lang.reflect.Type;
@ -19,48 +23,64 @@ import static com.moparisthebest.jdbc.codegen.JdbcMapperProcessor.typeMirrorToCl
*/ */
public class CompileTimeResultSetMapper { public class CompileTimeResultSetMapper {
private final Types types;
private final TypeMirror collectionType, mapType, mapCollectionType, iteratorType, listIteratorType;
public CompileTimeResultSetMapper(final ProcessingEnvironment processingEnv) {
types = processingEnv.getTypeUtils();
final Elements elements = processingEnv.getElementUtils();
collectionType = types.getDeclaredType(elements.getTypeElement(Collection.class.getCanonicalName()), types.getWildcardType(null, null));
mapType = types.getDeclaredType(elements.getTypeElement(Map.class.getCanonicalName()), types.getWildcardType(null, null), types.getWildcardType(null, null));
mapCollectionType = types.getDeclaredType(elements.getTypeElement(Map.class.getCanonicalName()), types.getWildcardType(null, null), types.getWildcardType(collectionType, null));
iteratorType = types.getDeclaredType(elements.getTypeElement(Iterator.class.getCanonicalName()), types.getWildcardType(null, null));
listIteratorType = types.getDeclaredType(elements.getTypeElement(ListIterator.class.getCanonicalName()), types.getWildcardType(null, null));
}
@SuppressWarnings({"unchecked"}) @SuppressWarnings({"unchecked"})
public void mapToResultType(final Writer w, final String[] keys, final ExecutableElement eeMethod, final int arrayMaxLength, final Calendar cal) throws IOException, NoSuchMethodException, ClassNotFoundException { public void mapToResultType(final Writer w, final String[] keys, final ExecutableElement eeMethod, final int arrayMaxLength, final Calendar cal) throws IOException, NoSuchMethodException, ClassNotFoundException {
//final Method m = fromExecutableElement(eeMethod); //final Method m = fromExecutableElement(eeMethod);
//final Class returnType = m.getReturnType(); //final Class returnType = m.getReturnType();
final TypeMirror returnTypeMirror = eeMethod.getReturnType(); final TypeMirror returnTypeMirror = eeMethod.getReturnType();
final Class returnType = typeMirrorToClass(returnTypeMirror); //final Class returnType = typeMirrorToClass(returnTypeMirror);
if (returnType.isArray()) { if (returnTypeMirror.getKind() == TypeKind.ARRAY) {
toArray(w, keys, ((ArrayType) returnTypeMirror).getComponentType(), returnType.getComponentType(), arrayMaxLength, cal); final TypeMirror componentType = ((ArrayType) returnTypeMirror).getComponentType();
} else if (Collection.class.isAssignableFrom(returnType)) { toArray(w, keys, componentType, typeMirrorToClass(componentType), arrayMaxLength, cal);
} else if (types.isAssignable(returnTypeMirror, collectionType)) {
final List<? extends TypeMirror> typeArguments = ((DeclaredType) returnTypeMirror).getTypeArguments(); final List<? extends TypeMirror> typeArguments = ((DeclaredType) returnTypeMirror).getTypeArguments();
toCollection(w, keys, returnTypeMirror, returnType, typeArguments.get(0), (Class) getActualTypeArguments(typeArguments)[0], arrayMaxLength, cal); toCollection(w, keys, returnTypeMirror, (Class<? extends Collection>)typeMirrorToClass(returnTypeMirror), typeArguments.get(0), (Class) getActualTypeArguments(typeArguments)[0], arrayMaxLength, cal);
} else if (Map.class.isAssignableFrom(returnType)) { } else if (types.isAssignable(returnTypeMirror, mapType)) {
final List<? extends TypeMirror> typeArguments = ((DeclaredType) returnTypeMirror).getTypeArguments(); final List<? extends TypeMirror> typeArguments = ((DeclaredType) returnTypeMirror).getTypeArguments();
final Type[] types = getActualTypeArguments(typeArguments); final Type[] typeArgs = getActualTypeArguments(typeArguments);
final TypeMirror collectionTypeMirror = typeArguments.get(1);
//if (types[1] instanceof ParameterizedType) { // for collectionMaps //if (types[1] instanceof ParameterizedType) { // for collectionMaps
if (!((DeclaredType) collectionTypeMirror).getTypeArguments().isEmpty()) { // for collectionMaps if (types.isAssignable(returnTypeMirror, mapCollectionType)) { // for collectionMaps
//final ParameterizedType pt = (ParameterizedType) types[1]; //final ParameterizedType pt = (ParameterizedType) types[1];
//final Class collectionType = (Class) pt.getRawType(); //final Class collectionType = (Class) pt.getRawType();
final TypeMirror collectionTypeMirror = typeArguments.get(1);
final Class collectionType = typeMirrorToClass(collectionTypeMirror); final Class collectionType = typeMirrorToClass(collectionTypeMirror);
if (Collection.class.isAssignableFrom(collectionType)) { if (Collection.class.isAssignableFrom(collectionType)) {
final TypeMirror componentTypeMirror = ((DeclaredType) collectionTypeMirror).getTypeArguments().get(0); final TypeMirror componentTypeMirror = ((DeclaredType) collectionTypeMirror).getTypeArguments().get(0);
//final Class componentType = (Class) pt.getActualTypeArguments()[0]; //final Class componentType = (Class) pt.getActualTypeArguments()[0];
final Class componentType = typeMirrorToClass(componentTypeMirror); final Class componentType = typeMirrorToClass(componentTypeMirror);
toMapCollection(w, keys, toMapCollection(w, keys,
returnTypeMirror, returnType, returnTypeMirror, (Class<? extends Map>)typeMirrorToClass(returnTypeMirror),
typeArguments.get(0), (Class) types[0], typeArguments.get(0), (Class) typeArgs[0],
collectionTypeMirror, collectionType, collectionTypeMirror, collectionType,
componentTypeMirror, componentType, componentTypeMirror, componentType,
arrayMaxLength, cal); arrayMaxLength, cal);
return; return;
} }
} }
toMap(w, keys, returnTypeMirror, returnType, typeArguments.get(0), (Class) types[0], typeArguments.get(1), (Class) types[1], arrayMaxLength, cal); toMap(w, keys, returnTypeMirror, (Class<? extends Map>)typeMirrorToClass(returnTypeMirror), typeArguments.get(0), (Class) typeArgs[0], typeArguments.get(1), (Class) typeArgs[1], arrayMaxLength, cal);
} else if (Iterator.class.isAssignableFrom(returnType)) { } else if (types.isAssignable(returnTypeMirror, iteratorType)) {
final List<? extends TypeMirror> typeArguments = ((DeclaredType) returnTypeMirror).getTypeArguments(); final List<? extends TypeMirror> typeArguments = ((DeclaredType) returnTypeMirror).getTypeArguments();
if (ListIterator.class.isAssignableFrom(returnType)) if (types.isAssignable(returnTypeMirror, listIteratorType))
toListIterator(w, keys, typeArguments.get(0), (Class) getActualTypeArguments(typeArguments)[0], arrayMaxLength, cal); toListIterator(w, keys, typeArguments.get(0), (Class) getActualTypeArguments(typeArguments)[0], arrayMaxLength, cal);
else else
toIterator(w, keys, typeArguments.get(0), (Class) getActualTypeArguments(typeArguments)[0], arrayMaxLength, cal); toIterator(w, keys, typeArguments.get(0), (Class) getActualTypeArguments(typeArguments)[0], arrayMaxLength, cal);
} else { } else {
toObject(w, keys, returnTypeMirror, returnType, cal); toObject(w, keys, returnTypeMirror, typeMirrorToClass(returnTypeMirror), cal);
} }
} }

4
jdbcmapper/src/main/java/com/moparisthebest/jdbc/codegen/JdbcMapperProcessor.java
View File

@ -26,13 +26,13 @@ import static com.moparisthebest.jdbc.TryClose.tryClose;
public class JdbcMapperProcessor extends AbstractProcessor { public class JdbcMapperProcessor extends AbstractProcessor {
private static final Pattern paramPattern = Pattern.compile("\\{(([^\\s]+)\\s+(([Nn][Oo][Tt]\\s+)?[Ii][Nn]\\s+))?([^}]+)\\}"); private static final Pattern paramPattern = Pattern.compile("\\{(([^\\s]+)\\s+(([Nn][Oo][Tt]\\s+)?[Ii][Nn]\\s+))?([^}]+)\\}");
private static final CompileTimeResultSetMapper rsm = new CompileTimeResultSetMapper();
private Types types; private Types types;
private TypeMirror sqlExceptionType, stringType, numberType, utilDateType, readerType, clobType, private TypeMirror sqlExceptionType, stringType, numberType, utilDateType, readerType, clobType,
byteArrayType, inputStreamType, fileType, blobType, sqlArrayType, collectionType; byteArrayType, inputStreamType, fileType, blobType, sqlArrayType, collectionType;
private JdbcMapper.DatabaseType defaultDatabaseType; private JdbcMapper.DatabaseType defaultDatabaseType;
private String defaultArrayNumberTypeName, defaultArrayStringTypeName; private String defaultArrayNumberTypeName, defaultArrayStringTypeName;
private CompileTimeResultSetMapper rsm;
public JdbcMapperProcessor() { public JdbcMapperProcessor() {
//out.println("JdbcMapperProcessor running!"); //out.println("JdbcMapperProcessor running!");
@ -67,6 +67,8 @@ public class JdbcMapperProcessor extends AbstractProcessor {
defaultArrayStringTypeName = processingEnv.getOptions().get("JdbcMapper.arrayStringTypeName"); defaultArrayStringTypeName = processingEnv.getOptions().get("JdbcMapper.arrayStringTypeName");
if (defaultArrayStringTypeName == null || defaultArrayStringTypeName.isEmpty()) if (defaultArrayStringTypeName == null || defaultArrayStringTypeName.isEmpty())
defaultArrayStringTypeName = defaultDatabaseType.arrayStringTypeName; defaultArrayStringTypeName = defaultDatabaseType.arrayStringTypeName;
rsm = new CompileTimeResultSetMapper(processingEnv);
} }
@Override @Override