info.archinnov.achilles.internals.metamodel.MapProperty Maven / Gradle / Ivy

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CQL implementation for Achilles using Datastax Java driver
There is a newer version: 6.1.0
/*
 * Copyright (C) 2012-2016 DuyHai DOAN
 *
 * 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 info.archinnov.achilles.internals.metamodel;

import static java.lang.String.format;
import static java.util.stream.Collectors.toMap;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.datastax.driver.core.DataType;
import com.datastax.driver.core.GettableData;
import com.datastax.driver.core.SettableData;
import com.datastax.driver.core.UDTValue;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.common.reflect.TypeParameter;
import com.google.common.reflect.TypeToken;

import info.archinnov.achilles.internals.factory.TupleTypeFactory;
import info.archinnov.achilles.internals.factory.UserTypeFactory;
import info.archinnov.achilles.internals.metamodel.columns.FieldInfo;
import info.archinnov.achilles.internals.utils.CollectionsHelper;
import info.archinnov.achilles.internals.utils.NamingHelper;
import info.archinnov.achilles.type.codec.Codec;
import info.archinnov.achilles.type.codec.CodecSignature;
import info.archinnov.achilles.type.factory.BeanFactory;
import info.archinnov.achilles.validation.Validator;

public class MapProperty extends
        AbstractProperty, Map> {

    private static final Logger LOGGER = LoggerFactory.getLogger(MapProperty.class);

    public final AbstractProperty keyProperty;
    public final AbstractProperty valueProperty;
    public final boolean frozen;
    public final boolean emptyCollectionIfNull;

    public MapProperty(FieldInfo> fieldInfo,
                       boolean frozen, boolean emptyCollectionIfNull,
                       AbstractProperty keyProperty,
                       AbstractProperty valueProperty) {
        super(new TypeToken>() {
                }
                        .where(new TypeParameter() {
                        }, keyProperty.valueFromTypeToken)
                        .where(new TypeParameter() {
                        }, valueProperty.valueFromTypeToken),
                new TypeToken>() {
                }
                        .where(new TypeParameter() {
                        }, keyProperty.valueToTypeToken)
                        .where(new TypeParameter() {
                        }, valueProperty.valueToTypeToken), fieldInfo);

        this.frozen = frozen;
        this.emptyCollectionIfNull = emptyCollectionIfNull;
        this.keyProperty = keyProperty;
        this.valueProperty = valueProperty;
    }

    public KEYTO encodeSingleKeyElement(KEYFROM javaValue) {
        return keyProperty.encodeFromRaw(javaValue);
    }

    public VALUETO encodeSingleValueElement(VALUEFROM javaValue) {
        return valueProperty.encodeFromRaw(javaValue);
    }

    @Override
    boolean isOptional() {
        return false;
    }

    @Override
    public void encodeToSettable(Map mapTo, SettableData settableData) {
        if (LOGGER.isTraceEnabled()) {
            LOGGER.trace(format("Encode '%s' map value %s to settable object %s",
                    fieldName, mapTo, settableData));
        }
        settableData.setMap(fieldInfo.quotedCqlColumn, mapTo);
    }

    @Override
    public Map encodeFromJavaInternal(Map map) {
        if (LOGGER.isTraceEnabled()) {
            LOGGER.trace(format("Encode from Java '%s' map %s to CQL type", fieldName, map));
        }
        return new HashMap<>(map
                .entrySet()
                .stream()
                .collect(toMap((Map.Entry entry) -> keyProperty.encodeFromRaw(entry.getKey()),
                        (Map.Entry entry) -> valueProperty.encodeFromRaw(entry.getValue()))));
    }

    @Override
    public Map encodeFromRawInternal(Object o) {
        if (LOGGER.isTraceEnabled()) {
            LOGGER.trace(format("Encode raw '%s' map object %s", fieldName, o));
        }
        Validator.validateTrue(Map.class.isAssignableFrom(o.getClass()), "The class of object %s to encode should be Map", o);
        return encodeFromJava((Map) o);
    }

    @Override
    public Map decodeFromGettable(GettableData gettableData) {
        if (gettableData.isNull(NamingHelper.maybeQuote(getColumnForSelect())) && !emptyCollectionIfNull) return null;
        return decodeFromGettableInternal(gettableData);
    }

    @Override
    public Map decodeFromGettableInternal(GettableData gettableData) {
        if (LOGGER.isTraceEnabled()) {
            LOGGER.trace(format("Decode '%s' map from gettable object %s", fieldName, gettableData));
        }

        return decodeFromRaw(gettableData.getMap(fieldInfo.quotedCqlColumn, keyProperty.valueToTypeToken, valueProperty.valueToTypeToken));
    }

    @Override
    public Map decodeFromRaw(Object o) {
        return decodeFromRawInternal(o);
    }

    @Override
    public Map decodeFromRawInternal(Object o) {
        if (LOGGER.isTraceEnabled()) {
            LOGGER.trace(format("Decode '%s' map raw object %s", fieldName, o));
        }

        if (o == null) {
            if (emptyCollectionIfNull)
                return new HashMap<>();
            else
                return null;
        }

        Validator.validateTrue(Map.class.isAssignableFrom(o.getClass()), "The class of object %s to decode should be Map<%s,%s>", o,
                keyProperty.valueToTypeToken, valueProperty.valueToTypeToken);

        return new HashMap<>(((Map) o)
                .entrySet()
                .stream()
                .collect(toMap((Map.Entry entry) -> keyProperty.decodeFromRaw(entry.getKey()), (Map.Entry entry) -> valueProperty.decodeFromRaw(entry.getValue()))));
    }

    public KEYFROM decodeSingleKeyElement(KEYTO cassandraValue) {
        return keyProperty.decodeFromRaw(cassandraValue);
    }

    public VALUEFROM decodeSingleValueElement(VALUETO cassandraValue) {
        return valueProperty.decodeFromRaw(cassandraValue);
    }

    @Override
    public DataType buildType() {
        if (LOGGER.isDebugEnabled()) {
            LOGGER.debug(format("Build current '%s' map data type", fieldName));
        }
        final DataType keyType = keyProperty.buildType();
        final DataType valueType = valueProperty.buildType();
        if (frozen) {
            return DataType.frozenMap(keyType, valueType);
        } else {
            return DataType.map(keyType, valueType);
        }
    }

    @Override
    public void encodeFieldToUdt(ENTITY entity, UDTValue udtValue) {
        final Map valueTo = encodeField(entity);
        if (LOGGER.isTraceEnabled()) {
            LOGGER.trace(format("Encode '%s' map %s to UDT value %s", fieldName, valueTo, udtValue));
        }
        udtValue.setMap(fieldInfo.quotedCqlColumn, valueTo);
    }

    @Override
    public boolean containsUDTProperty() {
        return keyProperty.containsUDTProperty() || valueProperty.containsUDTProperty();
    }

    @Override
    public List> getUDTClassProperties() {
        return CollectionsHelper.appendAll(keyProperty.getUDTClassProperties(), valueProperty.getUDTClassProperties());
    }

    @Override
    public void inject(UserTypeFactory userTypeFactory, TupleTypeFactory tupleTypeFactory) {
        keyProperty.inject(userTypeFactory, tupleTypeFactory);
        valueProperty.inject(userTypeFactory, tupleTypeFactory);
    }

    @Override
    public void inject(ObjectMapper mapper) {
        keyProperty.inject(mapper);
        valueProperty.inject(mapper);
    }

    @Override
    public void inject(BeanFactory factory) {
        keyProperty.inject(factory);
        valueProperty.inject(factory);
    }

    @Override
    public void injectRuntimeCodecs(Map, Codec> runtimeCodecs) {
        keyProperty.injectRuntimeCodecs(runtimeCodecs);
        valueProperty.injectRuntimeCodecs(runtimeCodecs);
    }

    @Override
    public void injectKeyspace(String keyspace) {
        keyProperty.injectKeyspace(keyspace);
        valueProperty.injectKeyspace(keyspace);
    }
}