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com.scalar.db.sql.statement.builder.UpdateStatementBuilder Maven / Gradle / Ivy
package com.scalar.db.sql.statement.builder;
import com.google.common.collect.ImmutableList;
import com.scalar.db.sql.AndPredicateList;
import com.scalar.db.sql.Assignment;
import com.scalar.db.sql.OrPredicateList;
import com.scalar.db.sql.Predicate;
import com.scalar.db.sql.TableRef;
import com.scalar.db.sql.statement.UpdateStatement;
import java.util.List;
import javax.annotation.Nullable;
public final class UpdateStatementBuilder {
private UpdateStatementBuilder() {}
public static class Start extends AsOrSet {
Start(@Nullable String namespaceName, String tableName) {
super(namespaceName, tableName);
}
}
public static class AsOrSet extends Set {
private AsOrSet(@Nullable String namespaceName, String tableName) {
super(namespaceName, tableName, null);
}
/**
* Specifies the alias of the target table.
*
* @param alias the alias of the target table
* @return a builder object
*/
public Set as(String alias) {
return new Set(namespaceName, tableName, alias);
}
}
public static class Set {
@Nullable protected final String namespaceName;
protected final String tableName;
@Nullable private final String alias;
private Set(@Nullable String namespaceName, String tableName, @Nullable String alias) {
this.namespaceName = namespaceName;
this.tableName = tableName;
this.alias = alias;
}
/**
* Sets assignments to update.
*
* @param assignments assignments to update
* @return a builder object
*/
public UpdateWhereStart set(Assignment... assignments) {
return new UpdateWhereStart(
namespaceName, tableName, alias, ImmutableList.copyOf(assignments));
}
/**
* Sets assignments to update.
*
* @param assignments assignments to update
* @return a builder object
*/
public UpdateWhereStart set(List assignments) {
return new UpdateWhereStart(
namespaceName, tableName, alias, ImmutableList.copyOf(assignments));
}
}
public static class UpdateWhereStart extends Buildable
implements WhereStart {
private UpdateWhereStart(
@Nullable String namespaceName,
String tableName,
@Nullable String alias,
ImmutableList assignments) {
super(
namespaceName,
tableName,
alias,
assignments,
null,
ImmutableList.builder(),
ImmutableList.builder());
}
@Override
public UpdateOngoingWhere where(Predicate predicate) {
return new UpdateOngoingWhere(
namespaceName,
tableName,
alias,
assignments,
predicate,
andPredicateListsBuilder,
orPredicateListsBuilder);
}
@Override
public UpdateOngoingWhereOr where(List predicates) {
return where(AndPredicateList.predicates(ImmutableList.copyOf(predicates)).build());
}
@Override
public UpdateOngoingWhereOr where(AndPredicateList andPredicateList) {
return new UpdateOngoingWhereOr(
namespaceName,
tableName,
alias,
assignments,
andPredicateListsBuilder.add(andPredicateList),
orPredicateListsBuilder);
}
@Override
public UpdateOngoingWhereAnd where(OrPredicateList orPredicateList) {
return new UpdateOngoingWhereAnd(
namespaceName,
tableName,
alias,
assignments,
andPredicateListsBuilder,
orPredicateListsBuilder.add(orPredicateList));
}
@Override
public UpdateOngoingWhereOr whereOr(List andPredicateLists) {
return new UpdateOngoingWhereOr(
namespaceName,
tableName,
alias,
assignments,
andPredicateListsBuilder.addAll(andPredicateLists),
orPredicateListsBuilder);
}
@Override
public UpdateOngoingWhereAnd whereAnd(List orPredicateLists) {
return new UpdateOngoingWhereAnd(
namespaceName,
tableName,
alias,
assignments,
andPredicateListsBuilder,
orPredicateListsBuilder.addAll(orPredicateLists));
}
}
public static class UpdateOngoingWhere extends Buildable
implements OngoingWhere {
private UpdateOngoingWhere(
@Nullable String namespaceName,
String tableName,
@Nullable String alias,
ImmutableList assignments,
@Nullable Predicate predicate,
ImmutableList.Builder andPredicateListsBuilder,
ImmutableList.Builder orPredicateListsBuilder) {
super(
namespaceName,
tableName,
alias,
assignments,
predicate,
andPredicateListsBuilder,
orPredicateListsBuilder);
}
@Override
public UpdateOngoingWhereAnd and(Predicate predicate) {
return new UpdateOngoingWhereAnd(
namespaceName,
tableName,
alias,
assignments,
andPredicateListsBuilder,
orPredicateListsBuilder
.add(OrPredicateList.predicate(this.predicate).build())
.add(OrPredicateList.predicate(predicate).build()));
}
@Override
public UpdateOngoingWhereAnd and(OrPredicateList orPredicateList) {
return new UpdateOngoingWhereAnd(
namespaceName,
tableName,
alias,
assignments,
andPredicateListsBuilder,
orPredicateListsBuilder
.add(OrPredicateList.predicate(this.predicate).build())
.add(orPredicateList));
}
@Override
public UpdateOngoingWhereOr or(Predicate predicate) {
return new UpdateOngoingWhereOr(
namespaceName,
tableName,
alias,
assignments,
andPredicateListsBuilder
.add(AndPredicateList.predicate(this.predicate).build())
.add(AndPredicateList.predicate(predicate).build()),
orPredicateListsBuilder);
}
@Override
public UpdateOngoingWhereOr or(AndPredicateList andPredicateList) {
return new UpdateOngoingWhereOr(
namespaceName,
tableName,
alias,
assignments,
andPredicateListsBuilder
.add(AndPredicateList.predicate(this.predicate).build())
.add(andPredicateList),
orPredicateListsBuilder);
}
}
public static class UpdateOngoingWhereAnd extends Buildable
implements OngoingWhereAnd {
private UpdateOngoingWhereAnd(
@Nullable String namespaceName,
String tableName,
@Nullable String alias,
ImmutableList assignments,
ImmutableList.Builder andPredicateListsBuilder,
ImmutableList.Builder orPredicateListsBuilder) {
super(
namespaceName,
tableName,
alias,
assignments,
null,
andPredicateListsBuilder,
orPredicateListsBuilder);
}
@Override
public UpdateOngoingWhereAnd and(Predicate predicate) {
orPredicateListsBuilder.add(OrPredicateList.predicate(predicate).build());
return this;
}
@Override
public UpdateOngoingWhereAnd and(OrPredicateList orPredicateList) {
orPredicateListsBuilder.add(orPredicateList);
return this;
}
}
public static class UpdateOngoingWhereOr extends Buildable
implements OngoingWhereOr {
private UpdateOngoingWhereOr(
@Nullable String namespaceName,
String tableName,
@Nullable String alias,
ImmutableList assignments,
ImmutableList.Builder andPredicateListsBuilder,
ImmutableList.Builder orPredicateListsBuilder) {
super(
namespaceName,
tableName,
alias,
assignments,
null,
andPredicateListsBuilder,
orPredicateListsBuilder);
}
@Override
public UpdateOngoingWhereOr or(Predicate predicate) {
andPredicateListsBuilder.add(AndPredicateList.predicate(predicate).build());
return this;
}
@Override
public UpdateOngoingWhereOr or(AndPredicateList andPredicateList) {
andPredicateListsBuilder.add(andPredicateList);
return this;
}
}
public static class Buildable {
@Nullable protected final String namespaceName;
protected final String tableName;
@Nullable protected final String alias;
protected final ImmutableList assignments;
@Nullable protected final Predicate predicate;
protected final ImmutableList.Builder andPredicateListsBuilder;
protected final ImmutableList.Builder orPredicateListsBuilder;
private Buildable(
@Nullable String namespaceName,
String tableName,
@Nullable String alias,
ImmutableList assignments,
@Nullable Predicate predicate,
ImmutableList.Builder andPredicateListsBuilder,
ImmutableList.Builder orPredicateListsBuilder) {
this.namespaceName = namespaceName;
this.tableName = tableName;
this.alias = alias;
this.assignments = assignments;
this.predicate = predicate;
this.andPredicateListsBuilder = andPredicateListsBuilder;
this.orPredicateListsBuilder = orPredicateListsBuilder;
}
/**
* Builds a UpdateStatement object.
*
* @return a UpdateStatement object
*/
public UpdateStatement build() {
return UpdateStatement.create(
TableRef.of(namespaceName, tableName),
alias,
assignments,
StatementBuilderUtils.buildAndPredicateLists(predicate, andPredicateListsBuilder),
StatementBuilderUtils.buildOrPredicateLists(orPredicateListsBuilder));
}
}
}
