792f606a64
Contains the cql3 grammer and supporting classes, which will be converted one by one. From commit bf599fb5b062cbcc652da78b7d699e7a01b949ad.
379 lines
12 KiB
Java
379 lines
12 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.cassandra.cql3;
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import java.nio.ByteBuffer;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.apache.cassandra.config.ColumnDefinition;
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import org.apache.cassandra.db.*;
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import org.apache.cassandra.db.composites.CellName;
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import org.apache.cassandra.db.composites.Composite;
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import org.apache.cassandra.db.marshal.AbstractType;
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import org.apache.cassandra.db.marshal.BytesType;
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import org.apache.cassandra.db.marshal.CounterColumnType;
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import org.apache.cassandra.db.marshal.LongType;
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import org.apache.cassandra.db.marshal.ReversedType;
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import org.apache.cassandra.exceptions.InvalidRequestException;
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import org.apache.cassandra.serializers.MarshalException;
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import org.apache.cassandra.utils.ByteBufferUtil;
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/**
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* Static helper methods and classes for constants.
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*/
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public abstract class Constants
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{
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private static final Logger logger = LoggerFactory.getLogger(Constants.class);
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public enum Type
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{
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STRING, INTEGER, UUID, FLOAT, BOOLEAN, HEX;
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}
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public static final Term.Raw NULL_LITERAL = new Term.Raw()
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{
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private final Term.Terminal NULL_VALUE = new Value(null)
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{
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@Override
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public Terminal bind(QueryOptions options)
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{
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// We return null because that makes life easier for collections
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return null;
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}
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@Override
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public String toString()
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{
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return "null";
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}
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};
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public Term prepare(String keyspace, ColumnSpecification receiver) throws InvalidRequestException
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{
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if (!testAssignment(keyspace, receiver).isAssignable())
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throw new InvalidRequestException("Invalid null value for counter increment/decrement");
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return NULL_VALUE;
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}
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public AssignmentTestable.TestResult testAssignment(String keyspace, ColumnSpecification receiver)
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{
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return receiver.type instanceof CounterColumnType
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? AssignmentTestable.TestResult.NOT_ASSIGNABLE
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: AssignmentTestable.TestResult.WEAKLY_ASSIGNABLE;
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}
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@Override
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public String toString()
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{
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return "null";
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}
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};
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public static class Literal implements Term.Raw
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{
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private final Type type;
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private final String text;
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private Literal(Type type, String text)
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{
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assert type != null && text != null;
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this.type = type;
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this.text = text;
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}
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public static Literal string(String text)
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{
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return new Literal(Type.STRING, text);
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}
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public static Literal integer(String text)
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{
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return new Literal(Type.INTEGER, text);
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}
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public static Literal floatingPoint(String text)
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{
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return new Literal(Type.FLOAT, text);
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}
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public static Literal uuid(String text)
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{
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return new Literal(Type.UUID, text);
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}
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public static Literal bool(String text)
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{
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return new Literal(Type.BOOLEAN, text);
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}
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public static Literal hex(String text)
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{
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return new Literal(Type.HEX, text);
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}
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public Value prepare(String keyspace, ColumnSpecification receiver) throws InvalidRequestException
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{
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if (!testAssignment(keyspace, receiver).isAssignable())
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throw new InvalidRequestException(String.format("Invalid %s constant (%s) for \"%s\" of type %s", type, text, receiver.name, receiver.type.asCQL3Type()));
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return new Value(parsedValue(receiver.type));
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}
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private ByteBuffer parsedValue(AbstractType<?> validator) throws InvalidRequestException
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{
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if (validator instanceof ReversedType<?>)
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validator = ((ReversedType<?>) validator).baseType;
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try
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{
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// BytesType doesn't want it's input prefixed by '0x'.
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if (type == Type.HEX && validator instanceof BytesType)
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return validator.fromString(text.substring(2));
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if (validator instanceof CounterColumnType)
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return LongType.instance.fromString(text);
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return validator.fromString(text);
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}
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catch (MarshalException e)
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{
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throw new InvalidRequestException(e.getMessage());
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}
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}
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public String getRawText()
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{
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return text;
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}
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public AssignmentTestable.TestResult testAssignment(String keyspace, ColumnSpecification receiver)
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{
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CQL3Type receiverType = receiver.type.asCQL3Type();
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if (receiverType.isCollection())
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return AssignmentTestable.TestResult.NOT_ASSIGNABLE;
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if (!(receiverType instanceof CQL3Type.Native))
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// Skip type validation for custom types. May or may not be a good idea
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return AssignmentTestable.TestResult.WEAKLY_ASSIGNABLE;
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CQL3Type.Native nt = (CQL3Type.Native)receiverType;
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switch (type)
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{
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case STRING:
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switch (nt)
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{
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case ASCII:
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case TEXT:
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case INET:
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case VARCHAR:
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case TIMESTAMP:
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return AssignmentTestable.TestResult.WEAKLY_ASSIGNABLE;
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}
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break;
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case INTEGER:
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switch (nt)
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{
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case BIGINT:
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case COUNTER:
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case DECIMAL:
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case DOUBLE:
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case FLOAT:
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case INT:
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case TIMESTAMP:
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case VARINT:
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return AssignmentTestable.TestResult.WEAKLY_ASSIGNABLE;
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}
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break;
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case UUID:
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switch (nt)
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{
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case UUID:
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case TIMEUUID:
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return AssignmentTestable.TestResult.WEAKLY_ASSIGNABLE;
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}
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break;
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case FLOAT:
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switch (nt)
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{
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case DECIMAL:
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case DOUBLE:
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case FLOAT:
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return AssignmentTestable.TestResult.WEAKLY_ASSIGNABLE;
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}
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break;
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case BOOLEAN:
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switch (nt)
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{
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case BOOLEAN:
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return AssignmentTestable.TestResult.WEAKLY_ASSIGNABLE;
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}
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break;
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case HEX:
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switch (nt)
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{
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case BLOB:
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return AssignmentTestable.TestResult.WEAKLY_ASSIGNABLE;
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}
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break;
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}
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return AssignmentTestable.TestResult.NOT_ASSIGNABLE;
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}
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@Override
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public String toString()
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{
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return type == Type.STRING ? String.format("'%s'", text) : text;
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}
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}
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/**
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* A constant value, i.e. a ByteBuffer.
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*/
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public static class Value extends Term.Terminal
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{
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public final ByteBuffer bytes;
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public Value(ByteBuffer bytes)
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{
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this.bytes = bytes;
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}
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public ByteBuffer get(QueryOptions options)
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{
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return bytes;
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}
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@Override
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public ByteBuffer bindAndGet(QueryOptions options)
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{
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return bytes;
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}
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@Override
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public String toString()
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{
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return ByteBufferUtil.bytesToHex(bytes);
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}
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}
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public static class Marker extends AbstractMarker
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{
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protected Marker(int bindIndex, ColumnSpecification receiver)
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{
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super(bindIndex, receiver);
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assert !receiver.type.isCollection();
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}
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@Override
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public ByteBuffer bindAndGet(QueryOptions options) throws InvalidRequestException
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{
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try
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{
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ByteBuffer value = options.getValues().get(bindIndex);
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if (value != null)
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receiver.type.validate(value);
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return value;
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}
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catch (MarshalException e)
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{
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throw new InvalidRequestException(e.getMessage());
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}
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}
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public Value bind(QueryOptions options) throws InvalidRequestException
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{
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ByteBuffer bytes = bindAndGet(options);
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return bytes == null ? null : new Constants.Value(bytes);
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}
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}
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public static class Setter extends Operation
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{
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public Setter(ColumnDefinition column, Term t)
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{
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super(column, t);
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}
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public void execute(ByteBuffer rowKey, ColumnFamily cf, Composite prefix, UpdateParameters params) throws InvalidRequestException
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{
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CellName cname = cf.getComparator().create(prefix, column);
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ByteBuffer value = t.bindAndGet(params.options);
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cf.addColumn(value == null ? params.makeTombstone(cname) : params.makeColumn(cname, value));
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}
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}
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public static class Adder extends Operation
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{
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public Adder(ColumnDefinition column, Term t)
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{
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super(column, t);
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}
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public void execute(ByteBuffer rowKey, ColumnFamily cf, Composite prefix, UpdateParameters params) throws InvalidRequestException
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{
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ByteBuffer bytes = t.bindAndGet(params.options);
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if (bytes == null)
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throw new InvalidRequestException("Invalid null value for counter increment");
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long increment = ByteBufferUtil.toLong(bytes);
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CellName cname = cf.getComparator().create(prefix, column);
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cf.addColumn(params.makeCounter(cname, increment));
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}
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}
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public static class Substracter extends Operation
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{
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public Substracter(ColumnDefinition column, Term t)
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{
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super(column, t);
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}
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public void execute(ByteBuffer rowKey, ColumnFamily cf, Composite prefix, UpdateParameters params) throws InvalidRequestException
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{
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ByteBuffer bytes = t.bindAndGet(params.options);
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if (bytes == null)
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throw new InvalidRequestException("Invalid null value for counter increment");
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long increment = ByteBufferUtil.toLong(bytes);
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if (increment == Long.MIN_VALUE)
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throw new InvalidRequestException("The negation of " + increment + " overflows supported counter precision (signed 8 bytes integer)");
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CellName cname = cf.getComparator().create(prefix, column);
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cf.addColumn(params.makeCounter(cname, -increment));
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}
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}
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// This happens to also handle collection because it doesn't felt worth
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// duplicating this further
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public static class Deleter extends Operation
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{
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public Deleter(ColumnDefinition column)
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{
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super(column, null);
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}
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public void execute(ByteBuffer rowKey, ColumnFamily cf, Composite prefix, UpdateParameters params) throws InvalidRequestException
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{
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CellName cname = cf.getComparator().create(prefix, column);
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if (column.type.isMultiCell())
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cf.addAtom(params.makeRangeTombstone(cname.slice()));
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else
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cf.addColumn(params.makeTombstone(cname));
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}
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};
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}
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