| /* |
| * 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.cassandra.cql3; |
| |
| import java.nio.ByteBuffer; |
| import java.util.*; |
| |
| import org.apache.cassandra.cql3.functions.Function; |
| import org.apache.cassandra.db.marshal.UTF8Type; |
| import org.apache.cassandra.db.marshal.UserType; |
| import org.apache.cassandra.exceptions.InvalidRequestException; |
| import org.apache.cassandra.utils.ByteBufferUtil; |
| |
| /** |
| * Static helper methods and classes for user types. |
| */ |
| public abstract class UserTypes |
| { |
| private UserTypes() {} |
| |
| public static ColumnSpecification fieldSpecOf(ColumnSpecification column, int field) |
| { |
| UserType ut = (UserType)column.type; |
| return new ColumnSpecification(column.ksName, |
| column.cfName, |
| new ColumnIdentifier(column.name + "." + UTF8Type.instance.compose(ut.fieldName(field)), true), |
| ut.fieldType(field)); |
| } |
| |
| public static class Literal extends Term.Raw |
| { |
| public final Map<ColumnIdentifier, Term.Raw> entries; |
| |
| public Literal(Map<ColumnIdentifier, Term.Raw> entries) |
| { |
| this.entries = entries; |
| } |
| |
| public Term prepare(String keyspace, ColumnSpecification receiver) throws InvalidRequestException |
| { |
| validateAssignableTo(keyspace, receiver); |
| |
| UserType ut = (UserType)receiver.type; |
| boolean allTerminal = true; |
| List<Term> values = new ArrayList<>(entries.size()); |
| int foundValues = 0; |
| for (int i = 0; i < ut.size(); i++) |
| { |
| ColumnIdentifier field = new ColumnIdentifier(ut.fieldName(i), UTF8Type.instance); |
| Term.Raw raw = entries.get(field); |
| if (raw == null) |
| raw = Constants.NULL_LITERAL; |
| else |
| ++foundValues; |
| Term value = raw.prepare(keyspace, fieldSpecOf(receiver, i)); |
| |
| if (value instanceof Term.NonTerminal) |
| allTerminal = false; |
| |
| values.add(value); |
| } |
| if (foundValues != entries.size()) |
| { |
| // We had some field that are not part of the type |
| for (ColumnIdentifier id : entries.keySet()) |
| if (!ut.fieldNames().contains(id.bytes)) |
| throw new InvalidRequestException(String.format("Unknown field '%s' in value of user defined type %s", id, ut.getNameAsString())); |
| } |
| |
| DelayedValue value = new DelayedValue(((UserType)receiver.type), values); |
| return allTerminal ? value.bind(QueryOptions.DEFAULT) : value; |
| } |
| |
| private void validateAssignableTo(String keyspace, ColumnSpecification receiver) throws InvalidRequestException |
| { |
| if (!(receiver.type instanceof UserType)) |
| throw new InvalidRequestException(String.format("Invalid user type literal for %s of type %s", receiver.name, receiver.type.asCQL3Type())); |
| |
| UserType ut = (UserType)receiver.type; |
| for (int i = 0; i < ut.size(); i++) |
| { |
| ColumnIdentifier field = new ColumnIdentifier(ut.fieldName(i), UTF8Type.instance); |
| Term.Raw value = entries.get(field); |
| if (value == null) |
| continue; |
| |
| ColumnSpecification fieldSpec = fieldSpecOf(receiver, i); |
| if (!value.testAssignment(keyspace, fieldSpec).isAssignable()) |
| throw new InvalidRequestException(String.format("Invalid user type literal for %s: field %s is not of type %s", receiver.name, field, fieldSpec.type.asCQL3Type())); |
| } |
| } |
| |
| public AssignmentTestable.TestResult testAssignment(String keyspace, ColumnSpecification receiver) |
| { |
| try |
| { |
| validateAssignableTo(keyspace, receiver); |
| return AssignmentTestable.TestResult.WEAKLY_ASSIGNABLE; |
| } |
| catch (InvalidRequestException e) |
| { |
| return AssignmentTestable.TestResult.NOT_ASSIGNABLE; |
| } |
| } |
| |
| public String getText() |
| { |
| StringBuilder sb = new StringBuilder(); |
| sb.append("{"); |
| Iterator<Map.Entry<ColumnIdentifier, Term.Raw>> iter = entries.entrySet().iterator(); |
| while (iter.hasNext()) |
| { |
| Map.Entry<ColumnIdentifier, Term.Raw> entry = iter.next(); |
| sb.append(entry.getKey()).append(": ").append(entry.getValue().getText()); |
| if (iter.hasNext()) |
| sb.append(", "); |
| } |
| sb.append("}"); |
| return sb.toString(); |
| } |
| } |
| |
| // Same purpose than Lists.DelayedValue, except we do handle bind marker in that case |
| public static class DelayedValue extends Term.NonTerminal |
| { |
| private final UserType type; |
| private final List<Term> values; |
| |
| public DelayedValue(UserType type, List<Term> values) |
| { |
| this.type = type; |
| this.values = values; |
| } |
| |
| public void addFunctionsTo(List<Function> functions) |
| { |
| Terms.addFunctions(values, functions); |
| } |
| |
| public boolean containsBindMarker() |
| { |
| for (Term t : values) |
| if (t.containsBindMarker()) |
| return true; |
| return false; |
| } |
| |
| public void collectMarkerSpecification(VariableSpecifications boundNames) |
| { |
| for (int i = 0; i < type.size(); i++) |
| values.get(i).collectMarkerSpecification(boundNames); |
| } |
| |
| private ByteBuffer[] bindInternal(QueryOptions options) throws InvalidRequestException |
| { |
| ByteBuffer[] buffers = new ByteBuffer[values.size()]; |
| for (int i = 0; i < type.size(); i++) |
| { |
| buffers[i] = values.get(i).bindAndGet(options); |
| // Since A UDT value is always written in its entirety Cassandra can't preserve a pre-existing value by 'not setting' the new value. Reject the query. |
| if (buffers[i] == ByteBufferUtil.UNSET_BYTE_BUFFER) |
| throw new InvalidRequestException(String.format("Invalid unset value for field '%s' of user defined type %s", type.fieldNameAsString(i), type.getNameAsString())); |
| } |
| return buffers; |
| } |
| |
| public Constants.Value bind(QueryOptions options) throws InvalidRequestException |
| { |
| return new Constants.Value(bindAndGet(options)); |
| } |
| |
| @Override |
| public ByteBuffer bindAndGet(QueryOptions options) throws InvalidRequestException |
| { |
| return UserType.buildValue(bindInternal(options)); |
| } |
| } |
| } |