use of com.facebook.presto.sql.gen.CachedInstanceBinder in project presto by prestodb.
the class ArrayToArrayCast method generateArrayCast.
private static Class<?> generateArrayCast(TypeManager typeManager, Signature elementCastSignature, ScalarFunctionImplementation elementCast) {
CallSiteBinder binder = new CallSiteBinder();
ClassDefinition definition = new ClassDefinition(a(PUBLIC, FINAL), CompilerUtils.makeClassName(Joiner.on("$").join("ArrayCast", elementCastSignature.getArgumentTypes().get(0), elementCastSignature.getReturnType())), type(Object.class));
Parameter session = arg("session", ConnectorSession.class);
Parameter value = arg("value", Block.class);
MethodDefinition method = definition.declareMethod(a(PUBLIC, STATIC), "castArray", type(Block.class), session, value);
Scope scope = method.getScope();
BytecodeBlock body = method.getBody();
Variable wasNull = scope.declareVariable(boolean.class, "wasNull");
body.append(wasNull.set(constantBoolean(false)));
// cast map elements
Type fromElementType = typeManager.getType(elementCastSignature.getArgumentTypes().get(0));
Type toElementType = typeManager.getType(elementCastSignature.getReturnType());
CachedInstanceBinder cachedInstanceBinder = new CachedInstanceBinder(definition, binder);
ArrayMapBytecodeExpression newArray = ArrayGeneratorUtils.map(scope, cachedInstanceBinder, fromElementType, toElementType, value, elementCastSignature.getName(), elementCast);
// return the block
body.append(newArray.ret());
MethodDefinition constructorDefinition = definition.declareConstructor(a(PUBLIC));
BytecodeBlock constructorBody = constructorDefinition.getBody();
Variable thisVariable = constructorDefinition.getThis();
constructorBody.comment("super();").append(thisVariable).invokeConstructor(Object.class);
cachedInstanceBinder.generateInitializations(thisVariable, constructorBody);
constructorBody.ret();
return defineClass(definition, Object.class, binder.getBindings(), ArrayToArrayCast.class.getClassLoader());
}
use of com.facebook.presto.sql.gen.CachedInstanceBinder in project presto by prestodb.
the class RowToRowCast method generateRowCast.
private static Class<?> generateRowCast(Type fromType, Type toType, FunctionRegistry functionRegistry) {
List<Type> toTypes = toType.getTypeParameters();
List<Type> fromTypes = fromType.getTypeParameters();
CallSiteBinder binder = new CallSiteBinder();
// Embed the MD5 hash code of input and output types into the generated class name instead of the raw type names,
// which could prevent the class name from hitting the length limitation and invalid characters.
byte[] md5Suffix = Hashing.md5().hashBytes((fromType + "$" + toType).getBytes()).asBytes();
ClassDefinition definition = new ClassDefinition(a(PUBLIC, FINAL), CompilerUtils.makeClassName(Joiner.on("$").join("RowCast", BaseEncoding.base16().encode(md5Suffix))), type(Object.class));
Parameter session = arg("session", ConnectorSession.class);
Parameter value = arg("value", Block.class);
MethodDefinition method = definition.declareMethod(a(PUBLIC, STATIC), "castRow", type(Block.class), session, value);
Scope scope = method.getScope();
BytecodeBlock body = method.getBody();
Variable wasNull = scope.declareVariable(boolean.class, "wasNull");
Variable blockBuilder = scope.createTempVariable(BlockBuilder.class);
body.append(wasNull.set(constantBoolean(false)));
CachedInstanceBinder cachedInstanceBinder = new CachedInstanceBinder(definition, binder);
// create the interleave block builder
body.newObject(InterleavedBlockBuilder.class).dup().append(constantType(binder, toType).invoke("getTypeParameters", List.class)).append(newInstance(BlockBuilderStatus.class)).append(constantInt(toTypes.size())).invokeConstructor(InterleavedBlockBuilder.class, List.class, BlockBuilderStatus.class, int.class).putVariable(blockBuilder);
// loop through to append member blocks
for (int i = 0; i < toTypes.size(); i++) {
Signature signature = internalOperator(CAST.name(), toTypes.get(i).getTypeSignature(), ImmutableList.of(fromTypes.get(i).getTypeSignature()));
ScalarFunctionImplementation function = functionRegistry.getScalarFunctionImplementation(signature);
Type currentFromType = fromTypes.get(i);
if (currentFromType.equals(UNKNOWN)) {
body.append(blockBuilder.invoke("appendNull", BlockBuilder.class).pop());
continue;
}
BytecodeExpression fromElement = constantType(binder, currentFromType).getValue(value, constantInt(i));
BytecodeExpression toElement = invokeFunction(scope, cachedInstanceBinder, signature.getName(), function, fromElement);
IfStatement ifElementNull = new IfStatement("if the element in the row type is null...");
ifElementNull.condition(value.invoke("isNull", boolean.class, constantInt(i))).ifTrue(blockBuilder.invoke("appendNull", BlockBuilder.class).pop()).ifFalse(constantType(binder, toTypes.get(i)).writeValue(blockBuilder, toElement));
body.append(ifElementNull);
}
// call blockBuilder.build()
body.append(blockBuilder.invoke("build", Block.class)).retObject();
// create constructor
MethodDefinition constructorDefinition = definition.declareConstructor(a(PUBLIC));
BytecodeBlock constructorBody = constructorDefinition.getBody();
Variable thisVariable = constructorDefinition.getThis();
constructorBody.comment("super();").append(thisVariable).invokeConstructor(Object.class);
cachedInstanceBinder.generateInitializations(thisVariable, constructorBody);
constructorBody.ret();
return defineClass(definition, Object.class, binder.getBindings(), RowToRowCast.class.getClassLoader());
}
use of com.facebook.presto.sql.gen.CachedInstanceBinder in project presto by prestodb.
the class RowIndeterminateOperator method generateIndeterminate.
private static Class<?> generateIndeterminate(Type type, FunctionAndTypeManager functionAndTypeManager) {
CallSiteBinder binder = new CallSiteBinder();
ClassDefinition definition = new ClassDefinition(a(PUBLIC, FINAL), makeClassName("RowIndeterminateOperator"), type(Object.class));
Parameter value = arg("value", type.getJavaType());
Parameter isNull = arg("isNull", boolean.class);
MethodDefinition method = definition.declareMethod(a(PUBLIC, STATIC), "indeterminate", type(boolean.class), value, isNull);
Scope scope = method.getScope();
BytecodeBlock body = method.getBody();
Variable wasNull = scope.declareVariable(boolean.class, "wasNull");
body.append(wasNull.set(constantFalse()));
CachedInstanceBinder cachedInstanceBinder = new CachedInstanceBinder(definition, binder);
LabelNode end = new LabelNode("end");
List<Type> fieldTypes = type.getTypeParameters();
boolean hasUnknownFields = fieldTypes.stream().anyMatch(fieldType -> fieldType.equals(UNKNOWN));
body.append(new IfStatement("if isNull is true...").condition(isNull).ifTrue(new BytecodeBlock().push(true).gotoLabel(end)));
if (hasUnknownFields) {
// if the current field type is UNKNOWN which means this field is null, directly return true
body.push(true).gotoLabel(end);
} else {
for (int i = 0; i < fieldTypes.size(); i++) {
IfStatement ifNullField = new IfStatement("if the field is null...");
ifNullField.condition(value.invoke("isNull", boolean.class, constantInt(i))).ifTrue(new BytecodeBlock().push(true).gotoLabel(end));
FunctionHandle functionHandle = functionAndTypeManager.resolveOperator(INDETERMINATE, fromTypes(fieldTypes.get(i)));
JavaScalarFunctionImplementation function = functionAndTypeManager.getJavaScalarFunctionImplementation(functionHandle);
BytecodeExpression element = constantType(binder, fieldTypes.get(i)).getValue(value, constantInt(i));
ifNullField.ifFalse(new IfStatement("if the field is not null but indeterminate...").condition(invokeFunction(scope, cachedInstanceBinder, functionAndTypeManager.getFunctionMetadata(functionHandle).getName().getObjectName(), function, element)).ifTrue(new BytecodeBlock().push(true).gotoLabel(end)));
body.append(ifNullField);
}
// if none of the fields is indeterminate, then push false
body.push(false);
}
body.visitLabel(end).retBoolean();
// create constructor
MethodDefinition constructorDefinition = definition.declareConstructor(a(PUBLIC));
BytecodeBlock constructorBody = constructorDefinition.getBody();
Variable thisVariable = constructorDefinition.getThis();
constructorBody.comment("super();").append(thisVariable).invokeConstructor(Object.class);
cachedInstanceBinder.generateInitializations(thisVariable, constructorBody);
constructorBody.ret();
return defineClass(definition, Object.class, binder.getBindings(), RowIndeterminateOperator.class.getClassLoader());
}
use of com.facebook.presto.sql.gen.CachedInstanceBinder in project presto by prestodb.
the class RowToRowCast method generateRowCast.
private static Class<?> generateRowCast(Type fromType, Type toType, FunctionAndTypeManager functionAndTypeManager) {
List<Type> toTypes = toType.getTypeParameters();
List<Type> fromTypes = fromType.getTypeParameters();
CallSiteBinder binder = new CallSiteBinder();
// Embed the MD5 hash code of input and output types into the generated class name instead of the raw type names,
// which could prevent the class name from hitting the length limitation and invalid characters.
byte[] md5Suffix = Hashing.md5().hashBytes((fromType + "$" + toType).getBytes()).asBytes();
ClassDefinition definition = new ClassDefinition(a(PUBLIC, FINAL), makeClassName(Joiner.on("$").join("RowCast", BaseEncoding.base16().encode(md5Suffix))), type(Object.class));
Parameter properties = arg("properties", SqlFunctionProperties.class);
Parameter value = arg("value", Block.class);
MethodDefinition method = definition.declareMethod(a(PUBLIC, STATIC), "castRow", type(Block.class), properties, value);
Scope scope = method.getScope();
BytecodeBlock body = method.getBody();
Variable wasNull = scope.declareVariable(boolean.class, "wasNull");
Variable blockBuilder = scope.createTempVariable(BlockBuilder.class);
Variable singleRowBlockWriter = scope.createTempVariable(BlockBuilder.class);
body.append(wasNull.set(constantBoolean(false)));
CachedInstanceBinder cachedInstanceBinder = new CachedInstanceBinder(definition, binder);
// create the row block builder
body.append(blockBuilder.set(constantType(binder, toType).invoke("createBlockBuilder", BlockBuilder.class, constantNull(BlockBuilderStatus.class), constantInt(1))));
body.append(singleRowBlockWriter.set(blockBuilder.invoke("beginBlockEntry", BlockBuilder.class)));
// loop through to append member blocks
for (int i = 0; i < toTypes.size(); i++) {
FunctionHandle functionHandle = functionAndTypeManager.lookupCast(CastType.CAST, fromTypes.get(i).getTypeSignature(), toTypes.get(i).getTypeSignature());
JavaScalarFunctionImplementation function = functionAndTypeManager.getJavaScalarFunctionImplementation(functionHandle);
Type currentFromType = fromTypes.get(i);
if (currentFromType.equals(UNKNOWN)) {
body.append(singleRowBlockWriter.invoke("appendNull", BlockBuilder.class).pop());
continue;
}
BytecodeExpression fromElement = constantType(binder, currentFromType).getValue(value, constantInt(i));
BytecodeExpression toElement = invokeFunction(scope, cachedInstanceBinder, CAST.name(), function, fromElement);
IfStatement ifElementNull = new IfStatement("if the element in the row type is null...");
ifElementNull.condition(value.invoke("isNull", boolean.class, constantInt(i))).ifTrue(singleRowBlockWriter.invoke("appendNull", BlockBuilder.class).pop()).ifFalse(constantType(binder, toTypes.get(i)).writeValue(singleRowBlockWriter, toElement));
body.append(ifElementNull);
}
// call blockBuilder.closeEntry() and return the single row block
body.append(blockBuilder.invoke("closeEntry", BlockBuilder.class).pop());
body.append(constantType(binder, toType).invoke("getObject", Object.class, blockBuilder.cast(Block.class), constantInt(0)).cast(Block.class).ret());
// create constructor
MethodDefinition constructorDefinition = definition.declareConstructor(a(PUBLIC));
BytecodeBlock constructorBody = constructorDefinition.getBody();
Variable thisVariable = constructorDefinition.getThis();
constructorBody.comment("super();").append(thisVariable).invokeConstructor(Object.class);
cachedInstanceBinder.generateInitializations(thisVariable, constructorBody);
constructorBody.ret();
return defineClass(definition, Object.class, binder.getBindings(), RowToRowCast.class.getClassLoader());
}
use of com.facebook.presto.sql.gen.CachedInstanceBinder in project presto by prestodb.
the class ArrayToArrayCast method generateArrayCast.
private static Class<?> generateArrayCast(TypeManager typeManager, FunctionMetadata elementCastFunctionMetadata, JavaScalarFunctionImplementation elementCast) {
CallSiteBinder binder = new CallSiteBinder();
ClassDefinition definition = new ClassDefinition(a(PUBLIC, FINAL), makeClassName(Joiner.on("$").join("ArrayCast", elementCastFunctionMetadata.getArgumentTypes().get(0), elementCastFunctionMetadata.getReturnType())), type(Object.class));
Parameter properties = arg("properties", SqlFunctionProperties.class);
Parameter value = arg("value", Block.class);
MethodDefinition method = definition.declareMethod(a(PUBLIC, STATIC), "castArray", type(Block.class), properties, value);
Scope scope = method.getScope();
BytecodeBlock body = method.getBody();
Variable wasNull = scope.declareVariable(boolean.class, "wasNull");
body.append(wasNull.set(constantBoolean(false)));
// cast map elements
Type fromElementType = typeManager.getType(elementCastFunctionMetadata.getArgumentTypes().get(0));
Type toElementType = typeManager.getType(elementCastFunctionMetadata.getReturnType());
CachedInstanceBinder cachedInstanceBinder = new CachedInstanceBinder(definition, binder);
ArrayMapBytecodeExpression newArray = ArrayGeneratorUtils.map(scope, cachedInstanceBinder, fromElementType, toElementType, value, elementCastFunctionMetadata.getName().getObjectName(), elementCast);
// return the block
body.append(newArray.ret());
MethodDefinition constructorDefinition = definition.declareConstructor(a(PUBLIC));
BytecodeBlock constructorBody = constructorDefinition.getBody();
Variable thisVariable = constructorDefinition.getThis();
constructorBody.comment("super();").append(thisVariable).invokeConstructor(Object.class);
cachedInstanceBinder.generateInitializations(thisVariable, constructorBody);
constructorBody.ret();
return defineClass(definition, Object.class, binder.getBindings(), ArrayToArrayCast.class.getClassLoader());
}
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