All Downloads are FREE. Search and download functionalities are using the official Maven repository.
  • Log In
  • Register

    • io.micronaut.data.runtime.intercept.criteria.async.AbstractAsyncSpecificationInterceptor Maven / Gradle / Ivy

    There is a newer version: 4.10.5
    Show newest version
    /*
 * Copyright 2017-2021 original 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
 *
 * https://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.micronaut.data.runtime.intercept.criteria.async;

import io.micronaut.aop.MethodInvocationContext;
import io.micronaut.core.annotation.Internal;
import io.micronaut.core.annotation.NonNull;
import io.micronaut.core.annotation.Nullable;
import io.micronaut.core.type.Argument;
import io.micronaut.data.exceptions.DataAccessException;
import io.micronaut.data.intercept.RepositoryMethodKey;
import io.micronaut.data.model.Pageable;
import io.micronaut.data.model.query.JoinPath;
import io.micronaut.data.operations.RepositoryOperations;
import io.micronaut.data.operations.async.AsyncCapableRepository;
import io.micronaut.data.operations.async.AsyncCriteriaCapableRepository;
import io.micronaut.data.operations.async.AsyncCriteriaRepositoryOperations;
import io.micronaut.data.operations.async.AsyncRepositoryOperations;
import io.micronaut.data.runtime.intercept.criteria.AbstractSpecificationInterceptor;
import jakarta.persistence.criteria.CriteriaQuery;

import java.util.List;
import java.util.Set;
import java.util.concurrent.CompletionStage;

/**
 * Abstract async specification interceptor.
 *
 * @param  The declaring type
 * @param  The return type
 * @author Denis Stepanov
 * @since 3.2
 */
@Internal
public abstract class AbstractAsyncSpecificationInterceptor extends AbstractSpecificationInterceptor {
    protected static final Argument> LIST_OF_OBJECTS = Argument.listOf(Object.class);

    protected final AsyncRepositoryOperations asyncOperations;
    protected final AsyncCriteriaRepositoryOperations asyncCriteriaOperations;

    /**
     * Default constructor.
     *
     * @param operations The operations
     */
    protected AbstractAsyncSpecificationInterceptor(RepositoryOperations operations) {
        super(operations);
        if (operations instanceof AsyncCapableRepository asyncCapableRepository) {
            this.asyncOperations = asyncCapableRepository.async();
        } else {
            throw new DataAccessException("Datastore of type [" + operations.getClass() + "] does not support asynchronous operations");
        }
        if (operations instanceof AsyncCriteriaRepositoryOperations asyncCriteriaRepositoryOperations) {
            asyncCriteriaOperations = asyncCriteriaRepositoryOperations;
        } else if (asyncOperations instanceof AsyncCriteriaRepositoryOperations asyncCriteriaRepositoryOperations) {
            asyncCriteriaOperations = asyncCriteriaRepositoryOperations;
        } else if (operations instanceof AsyncCriteriaCapableRepository repository) {
            asyncCriteriaOperations = repository.async();
        } else {
            asyncCriteriaOperations = null;
        }
    }

    @NonNull
    protected final CompletionStage> findAllAsync(RepositoryMethodKey methodKey, MethodInvocationContext context, Type type) {
        Set methodJoinPaths = getMethodJoinPaths(methodKey, context);
        if (asyncCriteriaOperations != null) {
            CriteriaQuery criteriaQuery = buildQuery(context, type, methodJoinPaths);
            Pageable pageable = getPageable(context);
            if (pageable != null) {
                return asyncCriteriaOperations.findAll(criteriaQuery, (int) pageable.getOffset(), pageable.getSize()).thenApply(m -> m);
            }
            return asyncCriteriaOperations.findAll(criteriaQuery).thenApply(m -> m);
        }
        return asyncOperations.findAll(preparedQueryForCriteria(methodKey, context, type, methodJoinPaths));
    }

    @NonNull
    protected final CompletionStage findOneAsync(RepositoryMethodKey methodKey, MethodInvocationContext context, Type type) {
        Set methodJoinPaths = getMethodJoinPaths(methodKey, context);
        if (asyncCriteriaOperations != null) {
            return asyncCriteriaOperations.findOne(buildQuery(context, type, methodJoinPaths));
        }
        return asyncOperations.findOne(preparedQueryForCriteria(methodKey, context, type, methodJoinPaths));
    }

    @NonNull
    protected final CompletionStage countAsync(RepositoryMethodKey methodKey, MethodInvocationContext context) {
        Set methodJoinPaths = getMethodJoinPaths(methodKey, context);
        if (asyncCriteriaOperations != null) {
            return asyncCriteriaOperations.findOne(buildCountQuery(context)).thenApply(n -> n);
        }
        return asyncOperations.findOne(preparedQueryForCriteria(methodKey, context, Type.COUNT, methodJoinPaths));
    }

    protected final CompletionStage existsAsync(RepositoryMethodKey methodKey, MethodInvocationContext context) {
        Set methodJoinPaths = getMethodJoinPaths(methodKey, context);
        if (asyncCriteriaOperations != null) {
            return asyncCriteriaOperations.findOne(buildExistsQuery(context, methodJoinPaths));
        }
        return asyncOperations.findOne(preparedQueryForCriteria(methodKey, context, Type.EXISTS, methodJoinPaths))
            .thenApply(one -> one instanceof Boolean aBoolean ? aBoolean : one != null);
    }

    protected final CompletionStage deleteAllAsync(RepositoryMethodKey methodKey, MethodInvocationContext context) {
        Set methodJoinPaths = getMethodJoinPaths(methodKey, context);
        if (asyncCriteriaOperations != null) {
            return asyncCriteriaOperations.deleteAll(buildDeleteQuery(context));
        }
        return asyncOperations.executeDelete(preparedQueryForCriteria(methodKey, context, Type.DELETE_ALL, methodJoinPaths));
    }

    protected final CompletionStage updateAllAsync(RepositoryMethodKey methodKey, MethodInvocationContext context) {
        Set methodJoinPaths = getMethodJoinPaths(methodKey, context);
        if (asyncCriteriaOperations != null) {
            return asyncCriteriaOperations.updateAll(buildUpdateQuery(context));
        }
        return asyncOperations.executeUpdate(preparedQueryForCriteria(methodKey, context, Type.UPDATE_ALL, methodJoinPaths));
    }

    @Override
    protected final Argument getReturnType(MethodInvocationContext context) {
        return findReturnType(context, Argument.OBJECT_ARGUMENT);
    }

    protected final Argument findReturnType(MethodInvocationContext context, Argument defaultArg) {
        if (context.isSuspend()) {
            return context.getReturnType().asArgument();
        }
        return context.getReturnType().asArgument().getFirstTypeVariable().orElse(defaultArg);
    }

    /**
     * Convert a number argument if necessary.
     *
     * @param context The method context
     * @param number  The number
     * @return The result
     */
    @Nullable
    protected Number convertNumberToReturnType(MethodInvocationContext context, Number number) {
        Argument firstTypeVar = findReturnType(context, Argument.LONG);
        Class type = firstTypeVar.getType();
        if (type == Object.class || type == Void.class) {
            return null;
        }
        if (number == null) {
            number = 0;
        }
        if (!type.isInstance(number)) {
            return (Number) operations.getConversionService().convert(number, firstTypeVar)
                .orElseThrow(() -> new IllegalStateException("Unsupported number type for return type: " + firstTypeVar));
        } else {
            return number;
        }
    }
}
    
    
    
    

    




    
    
    © 2015 - 2025 Weber Informatics LLC | Privacy Policy