/*
* 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.statements;
import java.nio.ByteBuffer;
import java.util.*;
import com.google.common.base.Function;
import com.google.common.collect.Iterables;
import org.github.jamm.MemoryMeter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.cassandra.auth.Permission;
import org.apache.cassandra.config.CFMetaData;
import org.apache.cassandra.config.ColumnDefinition;
import org.apache.cassandra.cql3.*;
import org.apache.cassandra.db.*;
import org.apache.cassandra.db.filter.ColumnSlice;
import org.apache.cassandra.db.filter.IDiskAtomFilter;
import org.apache.cassandra.db.filter.SliceQueryFilter;
import org.apache.cassandra.db.marshal.CompositeType;
import org.apache.cassandra.db.marshal.UTF8Type;
import org.apache.cassandra.db.marshal.ListType;
import org.apache.cassandra.db.marshal.BooleanType;
import org.apache.cassandra.exceptions.*;
import org.apache.cassandra.service.CASConditions;
import org.apache.cassandra.service.ClientState;
import org.apache.cassandra.service.QueryState;
import org.apache.cassandra.service.StorageProxy;
import org.apache.cassandra.thrift.ThriftValidation;
import org.apache.cassandra.transport.messages.ResultMessage;
import org.apache.cassandra.utils.Pair;
/*
* Abstract parent class of individual modifications, i.e. INSERT, UPDATE and DELETE.
*/
public abstract class ModificationStatement implements CQLStatement, MeasurableForPreparedCache
{
private static final ColumnIdentifier CAS_RESULT_COLUMN = new ColumnIdentifier("[applied]", false);
private static final Logger logger = LoggerFactory.getLogger(ModificationStatement.class);
private static boolean loggedCounterTTL = false;
private static boolean loggedCounterTimestamp = false;
public static enum StatementType { INSERT, UPDATE, DELETE }
public final StatementType type;
public final CFMetaData cfm;
public final Attributes attrs;
private final Map<ColumnIdentifier, Restriction> processedKeys = new HashMap<ColumnIdentifier, Restriction>();
private final List<Operation> columnOperations = new ArrayList<Operation>();
private int boundTerms;
// Separating normal and static conditions makes things somewhat easier
private List<ColumnCondition> columnConditions;
private List<ColumnCondition> staticConditions;
private boolean ifNotExists;
private boolean hasNoClusteringColumns = true;
private boolean setsOnlyStaticColumns;
private final Function<ColumnCondition, ColumnIdentifier> getColumnForCondition = new Function<ColumnCondition, ColumnIdentifier>()
{
public ColumnIdentifier apply(ColumnCondition cond)
{
return cond.column.name;
}
};
public ModificationStatement(StatementType type, CFMetaData cfm, Attributes attrs)
{
this.type = type;
this.cfm = cfm;
this.attrs = attrs;
}
public long measureForPreparedCache(MemoryMeter meter)
{
return meter.measure(this)
+ meter.measureDeep(attrs)
+ meter.measureDeep(processedKeys)
+ meter.measureDeep(columnOperations)
+ (columnConditions == null ? 0 : meter.measureDeep(columnConditions))
+ (staticConditions == null ? 0 : meter.measureDeep(staticConditions));
}
public abstract boolean requireFullClusteringKey();
public abstract void addUpdateForKey(ColumnFamily updates, ByteBuffer key, ColumnNameBuilder builder, UpdateParameters params) throws InvalidRequestException;
public int getBoundTerms()
{
return boundTerms;
}
public String keyspace()
{
return cfm.ksName;
}
public String columnFamily()
{
return cfm.cfName;
}
public boolean isCounter()
{
return cfm.getDefaultValidator().isCommutative();
}
public long getTimestamp(long now, List<ByteBuffer> variables) throws InvalidRequestException
{
return attrs.getTimestamp(now, variables);
}
public boolean isTimestampSet()
{
return attrs.isTimestampSet();
}
public int getTimeToLive(List<ByteBuffer> variables) throws InvalidRequestException
{
return attrs.getTimeToLive(variables);
}
public void checkAccess(ClientState state) throws InvalidRequestException, UnauthorizedException
{
state.hasColumnFamilyAccess(keyspace(), columnFamily(), Permission.MODIFY);
// CAS updates can be used to simulate a SELECT query, so should require Permission.SELECT as well.
if (hasConditions())
state.hasColumnFamilyAccess(keyspace(), columnFamily(), Permission.SELECT);
}
public void validate(ClientState state) throws InvalidRequestException
{
if (hasConditions() && attrs.isTimestampSet())
throw new InvalidRequestException("Custom timestamps are not allowed when conditions are used");
if (isCounter())
{
if (attrs.isTimestampSet() && !loggedCounterTimestamp)
{
logger.warn("Detected use of 'USING TIMESTAMP' in a counter UPDATE. This is invalid " +
"because counters do not use timestamps, and the timestamp has been ignored. " +
"Such queries will be rejected in Cassandra 2.1+ - please fix your queries before then.");
loggedCounterTimestamp = true;
}
if (attrs.isTimeToLiveSet() && !loggedCounterTTL)
{
logger.warn("Detected use of 'USING TTL' in a counter UPDATE. This is invalid " +
"because counter tables do not support TTL, and the TTL value has been ignored. " +
"Such queries will be rejected in Cassandra 2.1+ - please fix your queries before then.");
loggedCounterTTL = true;
}
}
}
public void addOperation(Operation op)
{
if (op.isStatic(cfm))
{
if (columnOperations.isEmpty())
setsOnlyStaticColumns = true;
}
else
{
setsOnlyStaticColumns = false;
}
columnOperations.add(op);
}
public List<Operation> getOperations()
{
return columnOperations;
}
public Iterable<ColumnIdentifier> getColumnsWithConditions()
{
if (ifNotExists)
return null;
return Iterables.concat(columnConditions == null ? Collections.<ColumnIdentifier>emptyList() : Iterables.transform(columnConditions, getColumnForCondition),
staticConditions == null ? Collections.<ColumnIdentifier>emptyList() : Iterables.transform(staticConditions, getColumnForCondition));
}
public void addCondition(ColumnCondition cond) throws InvalidRequestException
{
List<ColumnCondition> conds = null;
if (cond.column.kind == CFDefinition.Name.Kind.STATIC)
{
if (staticConditions == null)
staticConditions = new ArrayList<ColumnCondition>();
conds = staticConditions;
}
else
{
if (columnConditions == null)
columnConditions = new ArrayList<ColumnCondition>();
conds = columnConditions;
}
conds.add(cond);
}
public void setIfNotExistCondition()
{
ifNotExists = true;
}
public boolean hasIfNotExistCondition()
{
return ifNotExists;
}
private void addKeyValues(CFDefinition.Name name, Restriction values) throws InvalidRequestException
{
if (name.kind == CFDefinition.Name.Kind.COLUMN_ALIAS)
hasNoClusteringColumns = false;
if (processedKeys.put(name.name, values) != null)
throw new InvalidRequestException(String.format("Multiple definitions found for PRIMARY KEY part %s", name.name));
}
public void addKeyValue(CFDefinition.Name name, Term value) throws InvalidRequestException
{
addKeyValues(name, new Restriction.EQ(value, false));
}
public void processWhereClause(List<Relation> whereClause, VariableSpecifications names) throws InvalidRequestException
{
CFDefinition cfDef = cfm.getCfDef();
for (Relation rel : whereClause)
{
CFDefinition.Name name = cfDef.get(rel.getEntity());
if (name == null)
throw new InvalidRequestException(String.format("Unknown key identifier %s", rel.getEntity()));
switch (name.kind)
{
case KEY_ALIAS:
case COLUMN_ALIAS:
Restriction restriction;
if (rel.operator() == Relation.Type.EQ)
{
Term t = rel.getValue().prepare(name);
t.collectMarkerSpecification(names);
restriction = new Restriction.EQ(t, false);
}
else if (name.kind == CFDefinition.Name.Kind.KEY_ALIAS && rel.operator() == Relation.Type.IN)
{
if (rel.getValue() != null)
{
Term t = rel.getValue().prepare(name);
t.collectMarkerSpecification(names);
restriction = Restriction.IN.create(t);
}
else
{
List<Term> values = new ArrayList<Term>(rel.getInValues().size());
for (Term.Raw raw : rel.getInValues())
{
Term t = raw.prepare(name);
t.collectMarkerSpecification(names);
values.add(t);
}
restriction = Restriction.IN.create(values);
}
}
else
{
throw new InvalidRequestException(String.format("Invalid operator %s for PRIMARY KEY part %s", rel.operator(), name));
}
addKeyValues(name, restriction);
break;
case VALUE_ALIAS:
case COLUMN_METADATA:
case STATIC:
throw new InvalidRequestException(String.format("Non PRIMARY KEY %s found in where clause", name));
}
}
}
public List<ByteBuffer> buildPartitionKeyNames(List<ByteBuffer> variables)
throws InvalidRequestException
{
CFDefinition cfDef = cfm.getCfDef();
ColumnNameBuilder keyBuilder = cfDef.getKeyNameBuilder();
List<ByteBuffer> keys = new ArrayList<ByteBuffer>();
for (CFDefinition.Name name : cfDef.partitionKeys())
{
Restriction r = processedKeys.get(name.name);
if (r == null)
throw new InvalidRequestException(String.format("Missing mandatory PRIMARY KEY part %s", name));
List<ByteBuffer> values = r.values(variables);
if (keyBuilder.remainingCount() == 1)
{
for (ByteBuffer val : values)
{
if (val == null)
throw new InvalidRequestException(String.format("Invalid null value for partition key part %s", name));
ByteBuffer key = keyBuilder.copy().add(val).build();
ThriftValidation.validateKey(cfm, key);
keys.add(key);
}
}
else
{
if (values.size() != 1)
throw new InvalidRequestException("IN is only supported on the last column of the partition key");
ByteBuffer val = values.get(0);
if (val == null)
throw new InvalidRequestException(String.format("Invalid null value for partition key part %s", name));
keyBuilder.add(val);
}
}
return keys;
}
public ColumnNameBuilder createClusteringPrefixBuilder(List<ByteBuffer> variables)
throws InvalidRequestException
{
// If the only updated/deleted columns are static, then we don't need clustering columns.
// And in fact, unless it is an INSERT, we reject if clustering colums are provided as that
// suggest something unintended. For instance, given:
// CREATE TABLE t (k int, v int, s int static, PRIMARY KEY (k, v))
// it can make sense to do:
// INSERT INTO t(k, v, s) VALUES (0, 1, 2)
// but both
// UPDATE t SET s = 3 WHERE k = 0 AND v = 1
// DELETE v FROM t WHERE k = 0 AND v = 1
// sounds like you don't really understand what your are doing.
if (setsOnlyStaticColumns && columnConditions == null && (type != StatementType.INSERT || hasNoClusteringColumns))
{
// Reject if any clustering columns is set
for (CFDefinition.Name name : cfm.getCfDef().clusteringColumns())
if (processedKeys.get(name.name) != null)
throw new InvalidRequestException(String.format("Invalid restriction on clustering column %s since the %s statement modifies only static columns", name.name, type));
return cfm.getStaticColumnNameBuilder();
}
return createClusteringPrefixBuilderInternal(variables);
}
private ColumnNameBuilder updatePrefixFor(ByteBuffer name, ColumnNameBuilder prefix)
{
return isStatic(name) ? cfm.getStaticColumnNameBuilder() : prefix;
}
public boolean isStatic(ByteBuffer name)
{
ColumnDefinition def = cfm.getColumnDefinition(name);
return def != null && def.type == ColumnDefinition.Type.STATIC;
}
private ColumnNameBuilder createClusteringPrefixBuilderInternal(List<ByteBuffer> variables)
throws InvalidRequestException
{
CFDefinition cfDef = cfm.getCfDef();
ColumnNameBuilder builder = cfDef.getColumnNameBuilder();
CFDefinition.Name firstEmptyKey = null;
for (CFDefinition.Name name : cfDef.clusteringColumns())
{
Restriction r = processedKeys.get(name.name);
if (r == null)
{
firstEmptyKey = name;
if (requireFullClusteringKey() && cfDef.isComposite && !cfDef.isCompact)
throw new InvalidRequestException(String.format("Missing mandatory PRIMARY KEY part %s", name));
}
else if (firstEmptyKey != null)
{
throw new InvalidRequestException(String.format("Missing PRIMARY KEY part %s since %s is set", firstEmptyKey.name, name.name));
}
else
{
List<ByteBuffer> values = r.values(variables);
assert values.size() == 1; // We only allow IN for row keys so far
ByteBuffer val = values.get(0);
if (val == null)
throw new InvalidRequestException(String.format("Invalid null value for clustering key part %s", name));
builder.add(val);
}
}
return builder;
}
protected CFDefinition.Name getFirstEmptyKey()
{
for (CFDefinition.Name name : cfm.getCfDef().clusteringColumns())
{
if (processedKeys.get(name.name) == null)
return name;
}
return null;
}
protected Map<ByteBuffer, ColumnGroupMap> readRequiredRows(Collection<ByteBuffer> partitionKeys, ColumnNameBuilder clusteringPrefix, boolean local, ConsistencyLevel cl)
throws RequestExecutionException, RequestValidationException
{
// Lists SET operation incurs a read.
Set<ByteBuffer> toRead = null;
for (Operation op : columnOperations)
{
if (op.requiresRead())
{
if (toRead == null)
toRead = new TreeSet<ByteBuffer>(UTF8Type.instance);
toRead.add(op.columnName.key);
}
}
return toRead == null ? null : readRows(partitionKeys, clusteringPrefix, toRead, (CompositeType)cfm.comparator, local, cl);
}
private Map<ByteBuffer, ColumnGroupMap> readRows(Collection<ByteBuffer> partitionKeys, ColumnNameBuilder clusteringPrefix, Set<ByteBuffer> toRead, CompositeType composite, boolean local, ConsistencyLevel cl)
throws RequestExecutionException, RequestValidationException
{
try
{
cl.validateForRead(keyspace());
}
catch (InvalidRequestException e)
{
throw new InvalidRequestException(String.format("Write operation require a read but consistency %s is not supported on reads", cl));
}
ColumnSlice[] slices = new ColumnSlice[toRead.size()];
int i = 0;
for (ByteBuffer name : toRead)
{
ColumnNameBuilder prefix = updatePrefixFor(name, clusteringPrefix);
ByteBuffer start = prefix.copy().add(name).build();
ByteBuffer finish = prefix.copy().add(name).buildAsEndOfRange();
slices[i++] = new ColumnSlice(start, finish);
}
List<ReadCommand> commands = new ArrayList<ReadCommand>(partitionKeys.size());
long now = System.currentTimeMillis();
for (ByteBuffer key : partitionKeys)
commands.add(new SliceFromReadCommand(keyspace(),
key,
columnFamily(),
now,
new SliceQueryFilter(slices, false, Integer.MAX_VALUE)));
List<Row> rows = local
? SelectStatement.readLocally(keyspace(), commands)
: StorageProxy.read(commands, cl);
Map<ByteBuffer, ColumnGroupMap> map = new HashMap<ByteBuffer, ColumnGroupMap>();
for (Row row : rows)
{
if (row.cf == null || row.cf.getColumnCount() == 0)
continue;
ColumnGroupMap.Builder groupBuilder = new ColumnGroupMap.Builder(composite, true, now);
for (Column column : row.cf)
groupBuilder.add(column);
List<ColumnGroupMap> groups = groupBuilder.groups();
assert groups.isEmpty() || groups.size() == 1;
if (!groups.isEmpty())
map.put(row.key.key, groups.get(0));
}
return map;
}
public boolean hasConditions()
{
return ifNotExists
|| (columnConditions != null && !columnConditions.isEmpty())
|| (staticConditions != null && !staticConditions.isEmpty());
}
public ResultMessage execute(QueryState queryState, QueryOptions options)
throws RequestExecutionException, RequestValidationException
{
if (options.getConsistency() == null)
throw new InvalidRequestException("Invalid empty consistency level");
if (hasConditions() && options.getProtocolVersion() == 1)
throw new InvalidRequestException("Conditional updates are not supported by the protocol version in use. You need to upgrade to a driver using the native protocol v2.");
return hasConditions()
? executeWithCondition(queryState, options)
: executeWithoutCondition(queryState, options);
}
private ResultMessage executeWithoutCondition(QueryState queryState, QueryOptions options)
throws RequestExecutionException, RequestValidationException
{
ConsistencyLevel cl = options.getConsistency();
if (isCounter())
cl.validateCounterForWrite(cfm);
else
cl.validateForWrite(cfm.ksName);
Collection<? extends IMutation> mutations = getMutations(options.getValues(), false, cl, queryState.getTimestamp());
if (!mutations.isEmpty())
StorageProxy.mutateWithTriggers(mutations, cl, false);
return null;
}
public ResultMessage executeWithCondition(QueryState queryState, QueryOptions options)
throws RequestExecutionException, RequestValidationException
{
List<ByteBuffer> variables = options.getValues();
List<ByteBuffer> keys = buildPartitionKeyNames(variables);
// We don't support IN for CAS operation so far
if (keys.size() > 1)
throw new InvalidRequestException("IN on the partition key is not supported with conditional updates");
ByteBuffer key = keys.get(0);
CQL3CasConditions conditions = new CQL3CasConditions(cfm, queryState.getTimestamp());
ColumnNameBuilder prefix = createClusteringPrefixBuilder(variables);
ColumnFamily updates = UnsortedColumns.factory.create(cfm);
addUpdatesAndConditions(key, prefix, updates, conditions, variables, getTimestamp(queryState.getTimestamp(), variables));
ColumnFamily result = StorageProxy.cas(keyspace(),
columnFamily(),
key,
conditions,
updates,
options.getSerialConsistency(),
options.getConsistency());
return new ResultMessage.Rows(buildCasResultSet(key, result));
}
public void addUpdatesAndConditions(ByteBuffer key, ColumnNameBuilder clusteringPrefix, ColumnFamily updates, CQL3CasConditions conditions, List<ByteBuffer> variables, long now)
throws InvalidRequestException
{
UpdateParameters updParams = new UpdateParameters(cfm, variables, now, getTimeToLive(variables), null);
addUpdateForKey(updates, key, clusteringPrefix, updParams);
if (ifNotExists)
{
// If we use ifNotExists, if the statement applies to any non static columns, then the condition is on the row of the non-static
// columns and the prefix should be the rowPrefix. But if only static columns are set, then the ifNotExists apply to the existence
// of any static columns and we should use the prefix for the "static part" of the partition.
conditions.addNotExist(setsOnlyStaticColumns ? cfm.getStaticColumnNameBuilder() : clusteringPrefix);
}
else
{
if (columnConditions != null)
conditions.addConditions(clusteringPrefix, columnConditions, variables);
if (staticConditions != null)
conditions.addConditions(cfm.getStaticColumnNameBuilder(), staticConditions, variables);
}
}
private ResultSet buildCasResultSet(ByteBuffer key, ColumnFamily cf) throws InvalidRequestException
{
return buildCasResultSet(keyspace(), key, columnFamily(), cf, getColumnsWithConditions(), false);
}
public static ResultSet buildCasResultSet(String ksName, ByteBuffer key, String cfName, ColumnFamily cf, Iterable<ColumnIdentifier> columnsWithConditions, boolean isBatch)
throws InvalidRequestException
{
boolean success = cf == null;
ColumnSpecification spec = new ColumnSpecification(ksName, cfName, CAS_RESULT_COLUMN, BooleanType.instance);
ResultSet.Metadata metadata = new ResultSet.Metadata(Collections.singletonList(spec));
List<List<ByteBuffer>> rows = Collections.singletonList(Collections.singletonList(BooleanType.instance.decompose(success)));
ResultSet rs = new ResultSet(metadata, rows);
return success ? rs : merge(rs, buildCasFailureResultSet(key, cf, columnsWithConditions, isBatch));
}
private static ResultSet merge(ResultSet left, ResultSet right)
{
if (left.size() == 0)
return right;
else if (right.size() == 0)
return left;
assert left.size() == 1;
int size = left.metadata.names.size() + right.metadata.names.size();
List<ColumnSpecification> specs = new ArrayList<ColumnSpecification>(size);
specs.addAll(left.metadata.names);
specs.addAll(right.metadata.names);
List<List<ByteBuffer>> rows = new ArrayList<>(right.size());
for (int i = 0; i < right.size(); i++)
{
List<ByteBuffer> row = new ArrayList<ByteBuffer>(size);
row.addAll(left.rows.get(0));
row.addAll(right.rows.get(i));
rows.add(row);
}
return new ResultSet(new ResultSet.Metadata(specs), rows);
}
private static ResultSet buildCasFailureResultSet(ByteBuffer key, ColumnFamily cf, Iterable<ColumnIdentifier> columnsWithConditions, boolean isBatch)
throws InvalidRequestException
{
CFDefinition cfDef = cf.metadata().getCfDef();
Selection selection;
if (columnsWithConditions == null)
{
selection = Selection.wildcard(cfDef);
}
else
{
List<CFDefinition.Name> names = new ArrayList<CFDefinition.Name>();
// Adding the partition key for batches to disambiguate if the conditions span multipe rows (we don't add them outside
// of batches for compatibility sakes).
if (isBatch)
{
names.addAll(cfDef.partitionKeys());
names.addAll(cfDef.clusteringColumns());
}
for (ColumnIdentifier id : columnsWithConditions)
names.add(cfDef.get(id));
selection = Selection.forColumns(names);
}
long now = System.currentTimeMillis();
Selection.ResultSetBuilder builder = selection.resultSetBuilder(now);
SelectStatement.forSelection(cfDef, selection).processColumnFamily(key, cf, Collections.<ByteBuffer>emptyList(), now, builder);
return builder.build();
}
public ResultMessage executeInternal(QueryState queryState) throws RequestValidationException, RequestExecutionException
{
if (hasConditions())
throw new UnsupportedOperationException();
for (IMutation mutation : getMutations(Collections.<ByteBuffer>emptyList(), true, null, queryState.getTimestamp()))
mutation.apply();
return null;
}
/**
* Convert statement into a list of mutations to apply on the server
*
* @param variables value for prepared statement markers
* @param local if true, any requests (for collections) performed by getMutation should be done locally only.
* @param cl the consistency to use for the potential reads involved in generating the mutations (for lists set/delete operations)
* @param now the current timestamp in microseconds to use if no timestamp is user provided.
*
* @return list of the mutations
* @throws InvalidRequestException on invalid requests
*/
private Collection<? extends IMutation> getMutations(List<ByteBuffer> variables, boolean local, ConsistencyLevel cl, long now)
throws RequestExecutionException, RequestValidationException
{
List<ByteBuffer> keys = buildPartitionKeyNames(variables);
ColumnNameBuilder clusteringPrefix = createClusteringPrefixBuilder(variables);
UpdateParameters params = makeUpdateParameters(keys, clusteringPrefix, variables, local, cl, now);
Collection<IMutation> mutations = new ArrayList<IMutation>();
for (ByteBuffer key: keys)
{
ThriftValidation.validateKey(cfm, key);
ColumnFamily cf = UnsortedColumns.factory.create(cfm);
addUpdateForKey(cf, key, clusteringPrefix, params);
RowMutation rm = new RowMutation(cfm.ksName, key, cf);
mutations.add(isCounter() ? new CounterMutation(rm, cl) : rm);
}
return mutations;
}
public UpdateParameters makeUpdateParameters(Collection<ByteBuffer> keys,
ColumnNameBuilder prefix,
List<ByteBuffer> variables,
boolean local,
ConsistencyLevel cl,
long now)
throws RequestExecutionException, RequestValidationException
{
// Some lists operation requires reading
Map<ByteBuffer, ColumnGroupMap> rows = readRequiredRows(keys, prefix, local, cl);
return new UpdateParameters(cfm, variables, getTimestamp(now, variables), getTimeToLive(variables), rows);
}
public static abstract class Parsed extends CFStatement
{
protected final Attributes.Raw attrs;
private final List<Pair<ColumnIdentifier, ColumnCondition.Raw>> conditions;
private final boolean ifNotExists;
protected Parsed(CFName name, Attributes.Raw attrs, List<Pair<ColumnIdentifier, ColumnCondition.Raw>> conditions, boolean ifNotExists)
{
super(name);
this.attrs = attrs;
this.conditions = conditions == null ? Collections.<Pair<ColumnIdentifier, ColumnCondition.Raw>>emptyList() : conditions;
this.ifNotExists = ifNotExists;
}
public ParsedStatement.Prepared prepare() throws InvalidRequestException
{
VariableSpecifications boundNames = getBoundVariables();
ModificationStatement statement = prepare(boundNames);
return new ParsedStatement.Prepared(statement, boundNames);
}
public ModificationStatement prepare(VariableSpecifications boundNames) throws InvalidRequestException
{
CFMetaData metadata = ThriftValidation.validateColumnFamily(keyspace(), columnFamily());
CFDefinition cfDef = metadata.getCfDef();
// The collected count in the beginning of preparation.
// Will start at non-zero for statements nested inside a BatchStatement (the second and the further ones).
int collected = boundNames.getCollectedCount();
Attributes preparedAttributes = attrs.prepare(keyspace(), columnFamily());
preparedAttributes.collectMarkerSpecification(boundNames);
ModificationStatement stmt = prepareInternal(cfDef, boundNames, preparedAttributes);
if (ifNotExists || !conditions.isEmpty())
{
if (stmt.isCounter())
throw new InvalidRequestException("Conditional updates are not supported on counter tables");
if (attrs.timestamp != null)
throw new InvalidRequestException("Cannot provide custom timestamp for conditional update");
if (ifNotExists)
{
// To have both 'IF NOT EXISTS' and some other conditions doesn't make sense.
// So far this is enforced by the parser, but let's assert it for sanity if ever the parse changes.
assert conditions.isEmpty();
stmt.setIfNotExistCondition();
}
else
{
for (Pair<ColumnIdentifier, ColumnCondition.Raw> entry : conditions)
{
CFDefinition.Name name = cfDef.get(entry.left);
if (name == null)
throw new InvalidRequestException(String.format("Unknown identifier %s", entry.left));
ColumnCondition condition = entry.right.prepare(name);
condition.collectMarkerSpecification(boundNames);
switch (name.kind)
{
case KEY_ALIAS:
case COLUMN_ALIAS:
throw new InvalidRequestException(String.format("PRIMARY KEY part %s found in SET part", entry.left));
case VALUE_ALIAS:
case COLUMN_METADATA:
case STATIC:
stmt.addCondition(condition);
break;
}
}
}
}
stmt.boundTerms = boundNames.getCollectedCount() - collected;
return stmt;
}
protected abstract ModificationStatement prepareInternal(CFDefinition cfDef, VariableSpecifications boundNames, Attributes attrs) throws InvalidRequestException;
}
}