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io.stargate.sgv2.api.common.cql.builder.QueryBuilderImpl Maven / Gradle / Ivy
/*
* Copyright DataStax, Inc. and/or The Stargate Authors
*
* Licensed 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 io.stargate.sgv2.api.common.cql.builder;
import com.bpodgursky.jbool_expressions.Expression;
import com.bpodgursky.jbool_expressions.Variable;
import com.github.misberner.apcommons.util.AFModifier;
import com.github.misberner.duzzt.annotations.DSLAction;
import com.github.misberner.duzzt.annotations.GenerateEmbeddedDSL;
import com.github.misberner.duzzt.annotations.SubExpr;
import io.stargate.bridge.proto.QueryOuterClass.BatchQuery;
import io.stargate.bridge.proto.QueryOuterClass.Query;
import io.stargate.bridge.proto.QueryOuterClass.QueryParameters;
import io.stargate.bridge.proto.QueryOuterClass.Value;
import io.stargate.bridge.proto.QueryOuterClass.Values;
import io.stargate.bridge.proto.StargateBridge;
import io.stargate.sgv2.api.common.cql.ColumnUtils;
import io.stargate.sgv2.api.common.cql.CqlStrings;
import java.util.*;
import java.util.stream.Collectors;
import java.util.stream.Stream;
/**
* Convenience builder for creating queries.
*
* The generated CQL string is wrapped into a {@link Query} that can be passed directly to {@link
* StargateBridge#executeQuery(Query)}. In addition, any time a {@link Value} is passed to the
* builder (via such methods as {@link #where(Column, Predicate, Object)}, {@link #value(Column,
* Object)}, etc.), it is automatically replaced with a bind marker, and stored in {@link
* Query#getValues()}.
*/
@GenerateEmbeddedDSL(
modifier = AFModifier.DEFAULT,
autoVarArgs = false,
name = "QueryBuilder",
syntax =
"(||||||||) parameters? (build|buildForBatch)",
where = {
@SubExpr(
name = "keyspace",
definedAs = " | | (drop keyspace ifExists?)"),
@SubExpr(
name = "keyspaceCreate",
definedAs = "(create keyspace ifNotExists? withReplication andDurableWrites?)"),
@SubExpr(
name = "keyspaceAlter",
definedAs = "(alter keyspace (withReplication andDurableWrites?)?)"),
@SubExpr(
name = "table",
definedAs =
"(create table ifNotExists? column+ withComment? withDefaultTTL?) | (alter table (((addColumn+)? | (dropColumn+)? | (renameColumn+)?) | (withComment? withDefaultTTL?))) | (drop table ifExists?) | (truncate table)"),
@SubExpr(
name = "type",
definedAs =
"(create type ifNotExists? column+) | (drop type ifExists?) | (alter type (addColumn+ | renameColumn+))"),
@SubExpr(name = "insert", definedAs = "insertInto value+ ifNotExists? ttl? timestamp?"),
@SubExpr(name = "update", definedAs = "update ttl? timestamp? value+ where+ ifs* ifExists?"),
@SubExpr(name = "delete", definedAs = "delete column* from timestamp? where+ ifs* ifExists?"),
@SubExpr(
name = "select",
definedAs =
"select star? column* function* ((count|min|max|avg|sum|writeTimeColumn|similarityCosine|similarityDotProduct|similarityEuclidean) as?)* "
+ "from (where* perPartitionLimit? limit? groupBy* orderBy* vsearch*) allowFiltering?"),
@SubExpr(
name = "index",
definedAs =
"(drop ((materializedView|index) ifExists?)) | (create ((materializedView ifNotExists? asSelect (column+) from withComment?)"
+ " | (index ifNotExists? on column (indexKeys|indexValues|indexEntries|indexFull|indexingType)? (custom options?)?)))"),
@SubExpr(name = "other", definedAs = "cql")
})
@SuppressWarnings("PMD.ExcessiveClassLength")
public class QueryBuilderImpl {
private boolean isCreate;
private boolean isAlter;
private boolean isInsert;
private boolean isUpdate;
private boolean isDelete;
private boolean isSelect;
private boolean isDrop;
private boolean isKeyspace;
private boolean isTable;
private boolean isMaterializedView;
private boolean isType;
private boolean isIndex;
private boolean isTruncate;
private boolean isOther;
private CollectionIndexingType indexingType;
private String keyspaceName;
private String tableName;
private String indexName;
private String typeName;
private final List createColumns = new ArrayList<>();
private final List addColumns = new ArrayList<>();
private final List dropColumns = new ArrayList<>();
private final Map columnRenames = new LinkedHashMap<>();
/**
* The modifications made for a DML query (for INSERT, this will include modifications for the
* primary key columns, but for UPDATE those will be part of the WHERE clause; note that for
* DELETE, nothing will be populated by the builder since {@link #selection} and {@link #wheres}
* are used instead).
*/
private final List dmlModifications = new ArrayList<>();
/** Column names for a SELECT or DELETE. */
private final List selection = new ArrayList<>();
private final List functionCalls = new ArrayList<>();
/** The where conditions for a SELECT or UPDATE. */
private final List wheres = new ArrayList<>();
/** The where expression which contains conditions and logic operation for a SELECT or UPDATE. */
private Expression whereExpression = null;
/** The IFs conditions for a conditional UPDATE or DELETE. */
private final List ifs = new ArrayList<>();
private Term limitTerm;
private Integer limitInt;
private Term perPartitionLimitTerm;
private Integer perPartitionLimitInt;
private final List groupBys = new ArrayList<>();
private final Map orders = new LinkedHashMap<>();
private String orderByAnn;
// The bind markers that were generated if the client passed Value instances to the API methods
private final Map generatedMarkers = new HashMap<>();
// The generated bind values in their final order in the query
private final List generatedBoundValues = new ArrayList<>();
// Whether the client created explicit bind markers, e.g. with Term.marker()
private boolean hasExplicitMarkers;
private Replication replication;
private boolean ifNotExists;
private boolean ifExists;
private Boolean durableWrites;
private String comment;
private Integer defaultTTL;
private String indexCreateColumn;
private String customIndexClass;
private Map customIndexOptions;
private Term ttlTerm;
private Integer ttlInt;
private Term timestampTerm;
private Long timestampLong;
private boolean allowFiltering;
private QueryParameters parameters;
private String cql;
@DSLAction
public void create() {
isCreate = true;
}
@DSLAction
public void alter() {
isAlter = true;
}
@DSLAction
public void drop() {
isDrop = true;
}
@DSLAction
public void truncate() {
isTruncate = true;
}
@DSLAction
public void cql(String cql) {
this.isOther = true;
this.cql = cql;
}
@DSLAction
public void keyspace(String keyspace) {
this.keyspaceName = keyspace;
this.isKeyspace = true;
}
@DSLAction
public void table(String keyspace, String table) {
this.keyspaceName = keyspace;
table(table);
}
@DSLAction
public void table(String table) {
this.tableName = table;
this.isTable = true;
}
@DSLAction
public void withReplication(Replication replication) {
this.replication = replication;
}
@DSLAction
public void andDurableWrites(boolean durableWrites) {
this.durableWrites = durableWrites;
}
@DSLAction
public void ifNotExists() {
ifNotExists(true);
}
public void ifNotExists(boolean ifNotExists) {
this.ifNotExists = ifNotExists;
}
@DSLAction
public void ifExists() {
ifExists(true);
}
public void ifExists(boolean ifExists) {
this.ifExists = ifExists;
}
@DSLAction
public void withComment(String comment) {
this.comment = comment;
}
@DSLAction
public void withDefaultTTL(int defaultTTL) {
this.defaultTTL = defaultTTL;
}
@DSLAction
public void column(String column) {
if (isCreate) {
if (isTable || isType) {
throw invalid("Column '%s' type must be specified for a table or type creation");
} else if (isMaterializedView) {
createColumns.add(Column.reference(column));
} else if (isIndex) {
indexCreateColumn = column;
} else {
// We should haven't other case where this can be called ...
throw new AssertionError("This shouldn't have been called");
}
} else if (isSelect || isDelete) {
selection.add(column);
} else {
// We should haven't other case where this can be called ...
throw new AssertionError("This shouldn't have been called");
}
}
public void column(String... columns) {
for (String c : columns) {
column(c);
}
}
public void column(Column column) {
if (isCreate) {
if ((isTable || isType) && column.type() == null) {
throw invalid("Column '%s' type must be specified for a table or type creation");
}
createColumns.add(column);
} else {
column(column.name());
}
}
public void column(Collection columns) {
for (Column c : columns) {
column(c);
}
}
@DSLAction
public void column(String column, String type, Column.Kind kind) {
column(ImmutableColumn.builder().name(column).type(type).kind(kind).build());
}
@DSLAction
public void column(String column, String type, Column.Kind kind, Column.Order order) {
column(ImmutableColumn.builder().name(column).type(type).kind(kind).order(order).build());
}
@DSLAction
public void column(String column, Column.Kind kind) {
column(ImmutableColumn.builder().name(column).kind(kind).build());
}
@DSLAction
public void column(String column, Column.Kind kind, Column.Order order) {
column(ImmutableColumn.builder().name(column).kind(kind).order(order).build());
}
@DSLAction
public void column(String column, String type) {
column(column, type, Column.Kind.REGULAR);
}
public void as(String alias) {
if (functionCalls.isEmpty()) {
throw new IllegalStateException(
"The as() method cannot be called without a preceding function call.");
}
// the alias is set for the last function call
FunctionCall functionCall = functionCalls.get(functionCalls.size() - 1);
functionCall.setAlias(alias);
}
public void writeTimeColumn(String columnName) {
functionCalls.add(FunctionCall.writeTime(columnName));
}
public void writeTimeColumn(Column columnName) {
writeTimeColumn(columnName.name());
}
public void count(String columnName) {
functionCalls.add(FunctionCall.count(columnName));
}
public void count(Column columnName) {
count(columnName.name());
}
public void count() {
count((String) null);
}
public void max(String maxColumnName) {
functionCalls.add(FunctionCall.max(maxColumnName));
}
public void max(Column maxColumnName) {
max(maxColumnName.name());
}
public void min(String minColumnName) {
functionCalls.add(FunctionCall.min(minColumnName));
}
public void min(Column minColumnName) {
min(minColumnName.name());
}
public void sum(String sumColumnName) {
functionCalls.add(FunctionCall.sum(sumColumnName));
}
public void sum(Column sumColumnName) {
sum(sumColumnName.name());
}
public void avg(String avgColumnName) {
functionCalls.add(FunctionCall.avg(avgColumnName));
}
public void avg(Column avgColumnName) {
avg(avgColumnName.name());
}
public void similarityCosine(String columnName, Value value) {
functionCalls.add(FunctionCall.similarityCosine(columnName, termFor(value)));
}
public void similarityDotProduct(String columnName, Value value) {
functionCalls.add(FunctionCall.similarityDotProduct(columnName, termFor(value)));
}
public void similarityEuclidean(String columnName, Value value) {
functionCalls.add(FunctionCall.similarityEuclidean(columnName, termFor(value)));
}
public void function(Collection calls) {
functionCalls.addAll(calls);
}
public void star() {
if (!this.selection.isEmpty()) {
throw invalid("Cannot use * when other columns are selected");
}
}
@DSLAction
public void addColumn(String column, String type) {
addColumn(ImmutableColumn.builder().name(column).type(type).kind(Column.Kind.REGULAR).build());
}
public void addColumn(Column column) {
addColumns.add(column);
}
public void addColumn(Collection columns) {
for (Column column : columns) {
addColumn(column);
}
}
@DSLAction
public void dropColumn(String column) {
dropColumns.add(column);
}
public void dropColumn(Collection columns) {
for (String column : columns) {
dropColumn(column);
}
}
public void dropColumn(Column column) {
dropColumn(column.name());
}
@DSLAction
public void renameColumn(String from, String to) {
columnRenames.put(from, to);
}
public void renameColumn(Map columnRenames) {
this.columnRenames.putAll(columnRenames);
}
@DSLAction
public void insertInto(String keyspace, String table) {
this.keyspaceName = keyspace;
this.tableName = table;
this.isInsert = true;
}
public void insertInto(String table) {
insertInto(null, table);
}
@DSLAction
public void update(String keyspace, String table) {
this.keyspaceName = keyspace;
this.tableName = table;
this.isUpdate = true;
}
public void update(String table) {
update(null, table);
}
@DSLAction
public void delete() {
this.isDelete = true;
}
@DSLAction
public void select() {
this.isSelect = true;
}
@DSLAction
public void from(String keyspace, String table) {
this.keyspaceName = keyspace;
from(table);
}
@DSLAction
public void from(String table) {
this.tableName = table;
}
@DSLAction
public void value(String column, Object value) {
addModifier(ValueModifier.set(column, termFor(value)));
}
public void value(Column column, Object value) {
value(column.name(), value);
}
public void value(ValueModifier modifier) {
Term newValue = bindGrpcValues(modifier.value());
ValueModifier.Target newTarget = bindGrpcValues(modifier.target());
if (newValue != modifier.value() || newTarget != modifier.target()) {
modifier = ValueModifier.of(newTarget, modifier.operation(), newValue);
}
addModifier(modifier);
}
private void addModifier(ValueModifier modifier) {
if (isInsert && (modifier.target().fieldName() != null || modifier.target().mapKey() != null)) {
throw invalid("Can't reference fields or map elements in INSERT queries");
}
dmlModifications.add(modifier);
}
public void value(Collection setters) {
for (ValueModifier setter : setters) {
value(setter);
}
}
public void where(Column column, Predicate predicate, Object value) {
where(column.name(), predicate, value);
}
public void where(Column column, Predicate predicate) {
where(column.name(), predicate, Term.marker());
}
public void where(String columnName, Predicate predicate, Object value) {
where(BuiltCondition.of(columnName, predicate, termFor(value)));
}
public void where(BuiltCondition where) {
addWhere(bindGrpcValues(where));
}
private void addWhere(BuiltCondition where) {
wheres.add(where);
}
private void setWhereExpression(Expression whereExpression) {
this.whereExpression = whereExpression;
}
@DSLAction(autoVarArgs = false)
public void where(Collection extends BuiltCondition> where) {
for (BuiltCondition condition : where) {
where(condition);
}
}
@DSLAction(autoVarArgs = false)
public void where(Expression whereExpression) {
if (whereExpression != null) {
setWhereExpression(whereExpression);
}
}
public void ifs(String columnName, Predicate predicate, Object value) {
addIf(BuiltCondition.of(columnName, predicate, termFor(value)));
}
public void ifs(BuiltCondition condition) {
addIf(bindGrpcValues(condition));
}
private void addIf(BuiltCondition condition) {
ifs.add(condition);
}
@DSLAction(autoVarArgs = false)
public void ifs(Collection extends BuiltCondition> conditions) {
for (BuiltCondition condition : conditions) {
ifs(condition);
}
}
@DSLAction
public void materializedView(String keyspace, String name) {
this.keyspaceName = keyspace;
materializedView(name);
}
@DSLAction
public void materializedView(String name) {
// Note that we use the index to store the MV name, because the table variable will be used
// to store the base table name.
this.indexName = name;
this.isMaterializedView = true;
}
@DSLAction
public void asSelect() {
// This method is just so the builder flows better
}
@DSLAction
public void on(String keyspace, String table) {
this.keyspaceName = keyspace;
on(table);
}
@DSLAction
public void on(String table) {
this.tableName = table;
}
@DSLAction
public void index(String index) {
this.indexName = index;
this.isIndex = true;
}
@DSLAction
public void index() {
index(null);
}
@DSLAction
public void index(String keyspace, String index) {
this.keyspaceName = keyspace;
index(index);
}
@DSLAction
public void indexingType(CollectionIndexingType indexingType) {
this.indexingType = indexingType;
}
@DSLAction
public void indexKeys() {
indexingType(CollectionIndexingType.KEYS);
}
@DSLAction
public void indexValues() {
indexingType(CollectionIndexingType.VALUES);
}
@DSLAction
public void indexEntries() {
indexingType(CollectionIndexingType.ENTRIES);
}
@DSLAction
public void indexFull() {
indexingType(CollectionIndexingType.FULL);
}
@DSLAction
public void custom(String customIndexClass) {
this.customIndexClass = customIndexClass;
}
@DSLAction
public void custom(String customIndexClass, Map customIndexOptions) {
custom(customIndexClass);
this.customIndexOptions = customIndexOptions;
}
@DSLAction
public void options(Map customIndexOptions) {
this.customIndexOptions = customIndexOptions;
}
@DSLAction
public void type(String keyspace, String typeName) {
this.keyspaceName = keyspace;
this.typeName = typeName;
this.isType = true;
}
@DSLAction
public void limit(Integer limit) {
this.limitInt = limit;
this.limitTerm = null;
}
@DSLAction
public void limit(Value limit) {
this.limitTerm = limit == null ? null : termFor(limit);
this.limitInt = null;
}
@DSLAction
public void limit() {
this.limitTerm = termFor(Term.marker());
this.limitInt = null;
}
@DSLAction
public void perPartitionLimit(Integer perPartitionLimit) {
this.perPartitionLimitInt = perPartitionLimit;
this.perPartitionLimitTerm = null;
}
@DSLAction
public void perPartitionLimit(Value perPartitionLimit) {
this.perPartitionLimitTerm = perPartitionLimit == null ? null : termFor(perPartitionLimit);
this.perPartitionLimitInt = null;
}
@DSLAction
public void perPartitionLimit() {
this.perPartitionLimitTerm = termFor(Term.marker());
this.perPartitionLimitInt = null;
}
@DSLAction
public void groupBy(String name) {
groupBys.add(name);
}
@DSLAction
public void groupBy(Iterable columns) {
columns.forEach(this::groupBy);
}
public void orderBy(Column column, Column.Order order) {
orderBy(column.name(), order);
}
public void orderBy(String column, Column.Order order) {
this.orders.put(column, order);
orderByAnn = null;
}
public void vsearch(String column) {
this.orderByAnn = column;
this.orders.clear();
}
public void orderBy(Map orders) {
this.orders.clear();
this.orders.putAll(orders);
this.orderByAnn = null;
}
public void allowFiltering() {
this.allowFiltering = true;
}
public void allowFiltering(boolean allowFiltering) {
this.allowFiltering = allowFiltering;
}
@DSLAction
public void ttl(Integer ttl) {
this.ttlInt = ttl;
this.ttlTerm = null;
}
@DSLAction
public void ttl(Value ttl) {
this.ttlTerm = ttl == null ? null : termFor(ttl);
this.ttlInt = null;
}
@DSLAction
public void ttl() {
this.ttlTerm = termFor(Term.marker());
this.ttlInt = null;
}
@DSLAction
public void timestamp(Long timestamp) {
this.timestampLong = timestamp;
this.timestampTerm = null;
}
@DSLAction
public void timestamp(Value timestamp) {
this.timestampTerm = timestamp == null ? null : termFor(timestamp);
this.timestampLong = null;
}
@DSLAction
public void timestamp() {
this.timestampTerm = termFor(Term.marker());
this.timestampLong = null;
}
@DSLAction
public void parameters(QueryParameters parameters) {
this.parameters = parameters;
}
@DSLAction
public Query build() {
Query.Builder query = Query.newBuilder().setCql(buildCql());
if (!generatedBoundValues.isEmpty()) {
query.setValues(Values.newBuilder().addAllValues(generatedBoundValues).build());
}
if (parameters != null) {
query.setParameters(parameters);
}
return query.build();
}
@DSLAction
public BatchQuery buildForBatch() {
if (parameters != null) {
throw new IllegalStateException("Parameters aren't supported for a batched query");
}
BatchQuery.Builder query = BatchQuery.newBuilder().setCql(buildCql());
if (!generatedBoundValues.isEmpty()) {
query.setValues(Values.newBuilder().addAllValues(generatedBoundValues).build());
}
return query.build();
}
private String buildCql() {
if (isKeyspace && isCreate) {
return createKeyspace();
}
if (isKeyspace && isAlter) {
return alterKeyspace();
}
if (isKeyspace && isDrop) {
return dropKeyspace();
}
if (isTable && isCreate) {
return createTable();
}
if (isTable && isAlter) {
return alterTable();
}
if (isTable && isDrop) {
return dropTable();
}
if (isTable && isTruncate) {
return truncateTable();
}
if (isIndex && isCreate) {
return createIndex();
}
if (isIndex && isDrop) {
return dropIndex();
}
if (isMaterializedView && isCreate) {
return createMaterializedView();
}
if (isMaterializedView && isDrop) {
return dropMaterializedView();
}
if (isType && isCreate) {
return createType();
}
if (isType && isDrop) {
return dropType();
}
if (isType && isAlter) {
if (!columnRenames.isEmpty()) {
return renameTypeColumns();
}
return alterType();
}
if (isInsert) {
return insertQuery();
}
if (isUpdate) {
return updateQuery();
}
if (isDelete) {
return deleteQuery();
}
if (isSelect) {
return selectQuery();
}
if (isOther) {
return cql;
}
throw new AssertionError("Unknown query type");
}
private static IllegalArgumentException invalid(String format, Object... args) {
return new IllegalArgumentException(String.format(format, args));
}
private static String cqlName(String name) {
return ColumnUtils.maybeQuote(name);
}
private static class WithAdder {
private final StringBuilder builder;
private boolean withAdded;
private WithAdder(StringBuilder builder) {
this.builder = builder;
}
private StringBuilder add() {
if (!withAdded) {
builder.append(" WITH");
withAdded = true;
} else {
builder.append(" AND");
}
return builder;
}
}
private String createKeyspace() {
StringBuilder query = new StringBuilder("CREATE KEYSPACE ");
String ksName = cqlName(keyspaceName);
if (ifNotExists) {
query.append("IF NOT EXISTS ");
}
query.append(ksName);
query.append(" WITH replication = ").append(replication);
if (durableWrites != null) {
query.append(" AND durable_writes = ").append(durableWrites);
}
return query.toString();
}
private String alterKeyspace() {
StringBuilder query = new StringBuilder("ALTER KEYSPACE ").append(cqlName(keyspaceName));
WithAdder with = new WithAdder(query);
if (replication != null) {
with.add().append(" replication = ").append(replication);
}
if (durableWrites != null) {
with.add().append(" durable_writes = ").append(durableWrites);
}
return query.toString();
}
private String dropKeyspace() {
StringBuilder query = new StringBuilder("DROP KEYSPACE ");
if (ifExists) {
query.append("IF EXISTS ");
}
query.append(cqlName(keyspaceName));
return query.toString();
}
private void addPrimaryKey(StringBuilder query, List columns, String name) {
if (columns.stream()
.noneMatch(c -> c.kind() == Column.Kind.valueOf(Column.Kind.PARTITION_KEY.name()))) {
throw invalid(
"At least one partition key must be specified for table or materialized view '%s' %s",
name, Arrays.deepToString(columns.toArray()));
}
query
.append("PRIMARY KEY (")
.append(
columns.stream()
.filter(c -> c.kind() == Column.Kind.PARTITION_KEY)
.map(Column::cqlName)
.collect(Collectors.joining(", ", "(", ")")));
if (columns.stream().anyMatch(c -> c.kind() == Column.Kind.CLUSTERING)) {
query.append(", ");
}
query
.append(
columns.stream()
.filter(c -> c.kind() == Column.Kind.CLUSTERING)
.map(Column::cqlName)
.collect(Collectors.joining(", ")))
.append(")");
}
private void addClusteringOrder(WithAdder with, List columns) {
if (columns.stream().anyMatch(c -> c.kind() == Column.Kind.CLUSTERING && c.order() != null)) {
StringBuilder query = with.add();
query.append(
columns.stream()
.filter(c -> c.kind() == Column.Kind.CLUSTERING)
.map(c -> c.cqlName() + " " + c.order().name().toUpperCase())
.collect(Collectors.joining(", ", " CLUSTERING ORDER BY (", ")")));
}
}
private void addComment(WithAdder with) {
if (comment != null) {
String quotedComment = CqlStrings.quote(comment);
with.add().append(" comment = ").append(quotedComment);
}
}
private void addDefaultTTL(WithAdder with) {
if (defaultTTL != null) {
with.add().append(" default_time_to_live = ").append(defaultTTL);
}
}
private String maybeQualify(String elementName) {
if (keyspaceName == null) {
return cqlName(elementName);
} else {
return cqlName(keyspaceName) + '.' + cqlName(elementName);
}
}
private String createTable() {
StringBuilder query = new StringBuilder("CREATE TABLE ");
if (ifNotExists) {
query.append("IF NOT EXISTS ");
}
query
.append(maybeQualify(tableName))
.append(" (")
.append(
createColumns.stream()
.map(
c ->
c.cqlName()
+ " "
+ CqlStrings.doubleQuoteUdts(c.type())
+ (c.kind() == Column.Kind.STATIC ? " STATIC" : ""))
.collect(Collectors.joining(", ")))
.append(", ");
addPrimaryKey(query, createColumns, tableName);
query.append(")");
WithAdder with = new WithAdder(query);
addClusteringOrder(with, createColumns);
addComment(with);
addDefaultTTL(with);
return query.toString();
}
private String alterTable() {
StringBuilder query = new StringBuilder("ALTER TABLE ").append(maybeQualify(tableName));
if (!addColumns.isEmpty()) {
query.append(
addColumns.stream()
.map(
c ->
c.cqlName()
+ " "
+ CqlStrings.doubleQuoteUdts(c.type())
+ (c.kind() == Column.Kind.STATIC ? " STATIC" : ""))
.collect(Collectors.joining(", ", " ADD (", ")")));
}
if (!dropColumns.isEmpty()) {
query.append(
dropColumns.stream()
.map(QueryBuilderImpl::cqlName)
.collect(Collectors.joining(", ", " DROP (", ")")));
}
if (!columnRenames.isEmpty()) {
query.append(
columnRenames.entrySet().stream()
.map(rename -> cqlName(rename.getKey()) + " TO " + cqlName(rename.getValue()))
.collect(Collectors.joining(" AND ", " RENAME ", "")));
}
WithAdder with = new WithAdder(query);
addComment(with);
addDefaultTTL(with);
return query.toString();
}
private String dropTable() {
StringBuilder query = new StringBuilder("DROP TABLE ");
if (ifExists) {
query.append("IF EXISTS ");
}
query.append(maybeQualify(tableName));
return query.toString();
}
private String truncateTable() {
return "TRUNCATE " + maybeQualify(tableName);
}
private String createIndex() {
StringBuilder query = new StringBuilder("CREATE");
if (customIndexClass != null) {
query.append(" CUSTOM");
}
query.append(" INDEX");
if (ifNotExists) {
query.append(" IF NOT EXISTS");
}
if (indexName != null) {
query.append(" ").append(cqlName(indexName));
}
query.append(" ON ").append(maybeQualify(tableName)).append(" (");
if (indexingType == null) {
query.append(cqlName(indexCreateColumn));
} else {
switch (indexingType) {
case KEYS:
query.append("KEYS(");
break;
case VALUES:
query.append("VALUES(");
break;
case ENTRIES:
query.append("ENTRIES(");
break;
case FULL:
query.append("FULL(");
break;
default:
throw new AssertionError("Unhandled indexing type " + indexingType);
}
query.append(cqlName(indexCreateColumn)).append(")");
}
query.append(")");
if (customIndexClass != null) {
query.append(" USING").append(String.format(" '%s'", customIndexClass));
if (customIndexOptions != null && !customIndexOptions.isEmpty()) {
query.append(
customIndexOptions.entrySet().stream()
.map(e -> String.format("'%s': '%s'", e.getKey(), e.getValue()))
.collect(Collectors.joining(", ", " WITH OPTIONS = { ", " }")));
}
}
return query.toString();
}
private String dropIndex() {
StringBuilder query = new StringBuilder("DROP INDEX ");
if (ifExists) {
query.append("IF EXISTS ");
}
query.append(maybeQualify(indexName));
return query.toString();
}
private String createMaterializedView() {
StringBuilder query = new StringBuilder("CREATE MATERIALIZED VIEW ");
if (ifNotExists) {
query.append("IF NOT EXISTS ");
}
query
.append(maybeQualify(indexName))
.append(" AS SELECT ")
.append(createColumns.stream().map(Column::cqlName).collect(Collectors.joining(", ")))
.append(" FROM ")
.append(maybeQualify(tableName))
.append(" WHERE ")
.append(
createColumns.stream()
.map(c -> c.cqlName() + " IS NOT NULL")
.collect(Collectors.joining(" AND ")))
.append(" ");
addPrimaryKey(query, createColumns, indexName);
WithAdder with = new WithAdder(query);
addClusteringOrder(with, createColumns);
addComment(with);
addDefaultTTL(with);
return query.toString();
}
private String dropMaterializedView() {
StringBuilder query = new StringBuilder("DROP MATERIALIZED VIEW ");
if (ifExists) {
query.append("IF EXISTS ");
}
query.append(maybeQualify(indexName));
return query.toString();
}
private String createType() {
StringBuilder query = new StringBuilder("CREATE TYPE ");
if (ifNotExists) {
query.append("IF NOT EXISTS ");
}
query
.append(maybeQualify(typeName))
.append(
createColumns.stream()
.map(c -> c.cqlName() + " " + CqlStrings.doubleQuoteUdts(c.type()))
.collect(Collectors.joining(", ", " (", ")")));
return query.toString();
}
private String renameTypeColumns() {
return "ALTER TYPE "
+ maybeQualify(typeName)
+ " RENAME "
+ columnRenames.entrySet().stream()
.map(e -> e.getKey() + " TO " + e.getValue())
.collect(Collectors.joining(" AND "));
}
private String dropType() {
StringBuilder query = new StringBuilder("DROP TYPE ");
if (ifExists) {
query.append("IF EXISTS ");
}
query.append(maybeQualify(typeName));
return query.toString();
}
private String alterType() {
assert !addColumns.isEmpty();
return "ALTER TYPE "
+ maybeQualify(typeName)
+ " ADD "
+ addColumns.stream()
.map(c -> c.cqlName() + " " + CqlStrings.doubleQuoteUdts(c.type()))
.collect(Collectors.joining(", "));
}
private String insertQuery() {
StringBuilder query =
new StringBuilder("INSERT INTO ")
.append(maybeQualify(tableName))
.append(" (")
.append(
dmlModifications.stream()
.map(m -> cqlName(m.target().columnName()))
.collect(Collectors.joining(", ")))
.append(") VALUES (")
.append(
dmlModifications.stream()
.map(m -> formatValue(m.value()))
.collect(Collectors.joining(", ")))
.append(")");
if (ifNotExists) {
query.append(" IF NOT EXISTS");
}
addUsingClause(query);
return query.toString();
}
private String formatValue(Term value) {
return formatValue(value, generatedMarkers, generatedBoundValues);
}
static String formatValue(Term value, Map markers, List boundValues) {
// At this stage (query construction), we should only encounter markers: either the client
// used explicit markers, or they used QueryOuterClass.Value instances and we converted them
// into markers.
if (!(value instanceof Marker)) {
throw new AssertionError("Unexpected literal value");
}
Marker marker = (Marker) value;
Value boundValue = markers.get(marker);
if (boundValue == null) {
// The query only uses explicit markers
assert markers.isEmpty();
} else {
// Track the exact order in which values are to be bound to the query
boundValues.add(boundValue);
}
return marker.asCql();
}
private void addUsingClause(StringBuilder builder) {
String prefix = " USING ";
if (ttlInt != null) {
builder.append(prefix).append("TTL ").append(ttlInt);
prefix = " AND ";
} else if (ttlTerm != null) {
builder.append(prefix).append("TTL ").append(formatValue(ttlTerm));
prefix = " AND ";
}
if (timestampLong != null) {
builder.append(prefix).append("TIMESTAMP ").append(timestampLong);
} else if (timestampTerm != null) {
builder.append(prefix).append("TIMESTAMP ").append(formatValue(timestampTerm));
}
}
private String formatModifier(ValueModifier modifier) {
StringBuilder builder = new StringBuilder();
String columnName = modifier.target().columnName();
String fieldName = modifier.target().fieldName();
Term mapKey = modifier.target().mapKey();
String targetString;
if (fieldName != null) {
targetString = cqlName(columnName) + '.' + cqlName(fieldName);
} else if (mapKey != null) {
targetString = cqlName(columnName) + '[' + formatValue(mapKey) + ']';
} else {
targetString = cqlName(columnName);
}
builder
.append(targetString)
.append(" ")
.append(operationStr(modifier.operation()))
.append(" ")
.append(formatValue(modifier.value()));
// Unfortunately, prepend cannot be expressed with a concise operator and we have to add to it
if (modifier.operation() == ValueModifier.Operation.PREPEND) {
builder.append(" + ").append(targetString);
}
return builder.toString();
}
private String operationStr(ValueModifier.Operation operation) {
switch (operation) {
case PREPEND: // fallthrough on purpose
case SET:
return "=";
case APPEND: // fallthrough on purpose
case INCREMENT:
return "+=";
case REMOVE:
return "-=";
default:
throw new UnsupportedOperationException();
}
}
private String updateQuery() {
StringBuilder builder = new StringBuilder("UPDATE ").append(maybeQualify(tableName));
addUsingClause(builder);
builder
.append(" SET ")
.append(
dmlModifications.stream().map(this::formatModifier).collect(Collectors.joining(", ")));
appendWheres(builder);
appendIfs(builder);
return builder.toString();
}
private void appendWheres(StringBuilder builder) {
// JSON API fully rely on Expression instead of List
if (this.whereExpression != null) {
appendConditions(this.whereExpression, " WHERE ", builder);
return;
}
// keep wheres, since Docs API still use it
appendConditions(this.wheres, " WHERE ", builder);
}
private void appendIfs(StringBuilder builder) {
appendConditions(this.ifs, " IF ", builder);
}
private void appendConditions(
List conditions, String initialPrefix, StringBuilder builder) {
String prefix = initialPrefix;
if (initialPrefix.contains("IF") && ifExists) {
builder.append(prefix).append("EXISTS");
prefix = " AND ";
}
for (BuiltCondition condition : conditions) {
builder.append(prefix);
condition.lhs().appendToBuilder(builder, generatedMarkers, generatedBoundValues);
builder
.append(" ")
.append(condition.predicate().toString())
.append(" ")
.append(formatValue(condition.value()));
prefix = " AND ";
}
}
private void appendConditions(
Expression whereExpression, String initialPrefix, StringBuilder builder) {
String prefix = initialPrefix;
if (initialPrefix.contains("IF") && ifExists) {
builder.append(prefix).append("EXISTS");
prefix = " AND ";
}
builder.append(initialPrefix); // must have where
addExpressionCql(builder, whereExpression);
}
private void addExpressionCql(StringBuilder sb, Expression outerExpression) {
List> innerExpressions = outerExpression.getChildren();
switch (outerExpression.getExprType()) {
case "and" -> {
// have parenthesis only when having more than one innerExpression
if (innerExpressions.size() > 1) {
sb.append("(");
}
for (int i = 0; i < innerExpressions.size(); i++) {
addExpressionCql(sb, innerExpressions.get(i));
if (i == innerExpressions.size() - 1) {
break;
}
sb.append(" AND ");
}
if (innerExpressions.size() > 1) {
sb.append(")");
}
}
case "or" -> {
// have parenthesis only when having more than one innerExpression
if (innerExpressions.size() > 1) {
sb.append("(");
}
for (int i = 0; i < innerExpressions.size(); i++) {
addExpressionCql(sb, innerExpressions.get(i));
if (i == innerExpressions.size() - 1) {
break;
}
sb.append(" OR ");
}
if (innerExpressions.size() > 1) {
sb.append(")");
}
}
case "variable" -> {
Variable variable = (Variable) outerExpression;
BuiltCondition condition = bindGrpcValues(variable.getValue());
condition.lhs().appendToBuilder(sb, generatedMarkers, generatedBoundValues);
sb.append(" ")
.append(condition.predicate().toString())
.append(" ")
.append(formatValue(condition.value()));
}
default -> throw new IllegalArgumentException(
String.format("Unsupported expression type %s", outerExpression.getExprType()));
}
}
private String deleteQuery() {
StringBuilder builder = new StringBuilder("DELETE");
if (!selection.isEmpty()) {
builder.append(
selection.stream()
.map(QueryBuilderImpl::cqlName)
.collect(Collectors.joining(", ", " ", "")));
}
builder.append(" FROM ").append(maybeQualify(tableName));
addUsingClause(builder);
appendWheres(builder);
appendIfs(builder);
return builder.toString();
}
protected String selectQuery() {
StringBuilder builder = new StringBuilder("SELECT ");
if (selection.isEmpty() && functionCalls.isEmpty()) {
builder.append('*');
} else {
builder.append(
Stream.concat(
selection.stream().map(QueryBuilderImpl::cqlName),
functionCalls.stream().map(functionCall -> formatFunctionCall(functionCall)))
.collect(Collectors.joining(", ")));
}
builder.append(" FROM ").append(maybeQualify(tableName));
appendWheres(builder);
if (!groupBys.isEmpty()) {
builder
.append(" GROUP BY ")
.append(
groupBys.stream().map(QueryBuilderImpl::cqlName).collect(Collectors.joining(", ")));
}
if (!orders.isEmpty()) {
builder
.append(" ORDER BY ")
.append(
orders.entrySet().stream()
.map(e -> cqlName(e.getKey()) + " " + e.getValue().name())
.collect(Collectors.joining(", ")));
}
if (orderByAnn != null) {
builder.append(" ORDER BY ").append(orderByAnn).append(" ANN OF ?");
}
if (perPartitionLimitInt != null) {
builder.append(" PER PARTITION LIMIT ").append(perPartitionLimitInt);
} else if (perPartitionLimitTerm != null) {
builder.append(" PER PARTITION LIMIT ").append(formatValue(perPartitionLimitTerm));
}
if (limitInt != null) {
builder.append(" LIMIT ").append(limitInt);
} else if (limitTerm != null) {
builder.append(" LIMIT ").append(formatValue(limitTerm));
}
if (allowFiltering) {
builder.append(" ALLOW FILTERING");
}
return builder.toString();
}
private Term termFor(Object value) {
Objects.requireNonNull(value, Literal.NULL_ERROR_MESSAGE);
if (value instanceof Marker) {
if (!generatedMarkers.isEmpty()) {
throw mixedMarkersError();
}
hasExplicitMarkers = true;
return ((Marker) value);
} else if (value instanceof Value) {
if (hasExplicitMarkers) {
throw mixedMarkersError();
}
Marker marker = new Marker();
generatedMarkers.put(marker, (Value) value);
return marker;
} else {
throw new IllegalArgumentException(
String.format(
"Unsupported type %s. Use a QueryOuterClass.Value or Term.marker()",
value.getClass().getSimpleName()));
}
}
private IllegalStateException mixedMarkersError() {
return new IllegalStateException(
"Can't have both QueryOuterClass.Value arguments and explicit bind markers");
}
/**
* Inspects a client-provided term to check if it references a gRPC {@link Value}. If so, the
* value is automatically bound and a bind marker is returned. If not, the instance is returned
* unchanged.
*/
private Term bindGrpcValues(Term t) {
if (!(t instanceof Literal)) {
return t;
}
Value v = ((Literal) t).get();
return termFor(v);
}
/** @see #bindGrpcValues(Term) */
private ValueModifier.Target bindGrpcValues(ValueModifier.Target t) {
Term mapKey = t.mapKey();
if (mapKey == null) {
return t;
}
if (!(mapKey instanceof Literal)) {
return t;
}
Value v = ((Literal) mapKey).get();
return ValueModifier.Target.mapValue(t.columnName(), termFor(v));
}
/** @see #bindGrpcValues(Term) */
private BuiltCondition.LHS bindGrpcValues(BuiltCondition.LHS lhs) {
return lhs.value()
.filter(v -> v instanceof Literal)
.map(
v -> {
Term newValue = termFor(((Literal) v).get());
return (BuiltCondition.LHS)
new BuiltCondition.LHS.MapElement(lhs.columnName(), newValue);
})
.orElse(lhs);
}
/** @see #bindGrpcValues(Term) */
private BuiltCondition bindGrpcValues(BuiltCondition where) {
BuiltCondition.LHS newLhs = bindGrpcValues(where.lhs());
Term newValue = bindGrpcValues(where.value());
if (newValue != where.value() || newLhs != where.lhs()) {
where = BuiltCondition.of(newLhs, where.predicate(), newValue);
}
return where;
}
private static final String COUNT_FUNCTION_NAME = "COUNT";
private String formatFunctionCall(FunctionCall functionCall) {
StringBuilder builder = new StringBuilder();
if (functionCall.getColumnName() == null
&& COUNT_FUNCTION_NAME.equals(functionCall.getFunctionName())) {
builder.append(functionCall.getFunctionName()).append("(1)");
} else {
builder
.append(functionCall.getFunctionName())
.append('(')
.append(cqlName(functionCall.getColumnName()));
if (functionCall.getVectorTerm() != null) {
builder.append(", ").append(formatValue(functionCall.getVectorTerm()));
}
builder.append(')');
}
if (functionCall.getAlias() != null) {
builder.append(" AS ").append(cqlName(functionCall.getAlias()));
}
return builder.toString();
}
public static class FunctionCall {
final String columnName;
String alias;
final String functionName;
final Term vectorTerm;
private FunctionCall(String columnName, String alias, String functionName, Term vectorTerm) {
this.columnName = columnName;
this.alias = alias;
this.functionName = functionName;
this.vectorTerm = vectorTerm;
}
public static FunctionCall function(String name, String alias, String functionName) {
return new FunctionCall(name, alias, functionName, null);
}
public static FunctionCall function(
String name, String alias, String functionName, Term vectorTerm) {
return new FunctionCall(name, alias, functionName, vectorTerm);
}
public static FunctionCall count() {
return count(null, null);
}
public static FunctionCall count(String columnName) {
return count(columnName, null);
}
public static FunctionCall count(String columnName, String alias) {
return function(columnName, alias, "COUNT");
}
public static FunctionCall max(String columnName) {
return max(columnName, null);
}
public static FunctionCall max(String columnName, String alias) {
return function(columnName, alias, "MAX");
}
public static FunctionCall min(String columnName) {
return min(columnName, null);
}
public static FunctionCall min(String columnName, String alias) {
return function(columnName, alias, "MIN");
}
public static FunctionCall avg(String columnName) {
return avg(columnName, null);
}
public static FunctionCall avg(String columnName, String alias) {
return function(columnName, alias, "AVG");
}
public static FunctionCall sum(String columnName) {
return sum(columnName, null);
}
public static FunctionCall sum(String columnName, String alias) {
return function(columnName, alias, "SUM");
}
public static FunctionCall ttl(String columnName) {
return ttl(columnName, null);
}
public static FunctionCall ttl(String columnName, String alias) {
return function(columnName, alias, "TTL");
}
public static FunctionCall writeTime(String columnName) {
return writeTime(columnName, null);
}
public static FunctionCall writeTime(String columnName, String alias) {
return function(columnName, alias, "WRITETIME");
}
public static FunctionCall similarityCosine(String columnName, Term vectorTerm) {
return function(columnName, null, "SIMILARITY_COSINE", vectorTerm);
}
public static FunctionCall similarityCosine(String columnName, String alias, Term vectorTerm) {
return function(columnName, alias, "SIMILARITY_COSINE", vectorTerm);
}
public static FunctionCall similarityDotProduct(String columnName, Term vectorTerm) {
return function(columnName, null, "SIMILARITY_DOT_PRODUCT", vectorTerm);
}
public static FunctionCall similarityDotProduct(
String columnName, String alias, Term vectorTerm) {
return function(columnName, alias, "SIMILARITY_DOT_PRODUCT", vectorTerm);
}
public static FunctionCall similarityEuclidean(String columnName, Term vectorTerm) {
return function(columnName, null, "SIMILARITY_EUCLIDEAN", vectorTerm);
}
public static FunctionCall similarityEuclidean(
String columnName, String alias, Term vectorTerm) {
return function(columnName, alias, "SIMILARITY_EUCLIDEAN", vectorTerm);
}
public void setAlias(String alias) {
this.alias = alias;
}
public String getColumnName() {
return columnName;
}
public String getFunctionName() {
return functionName;
}
public String getAlias() {
return alias;
}
public Term getVectorTerm() {
return vectorTerm;
}
}
}