Package org.hibernate.metamodel.source.annotations.entity

Source Code of org.hibernate.metamodel.source.annotations.entity.EntityClass

/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2011, Red Hat Inc. or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors.  All third-party contributions are
* distributed under license by Red Hat Inc.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA  02110-1301  USA
*/
package org.hibernate.metamodel.source.annotations.entity;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import javax.persistence.AccessType;

import org.jboss.jandex.AnnotationInstance;
import org.jboss.jandex.AnnotationValue;
import org.jboss.jandex.ClassInfo;
import org.jboss.jandex.DotName;

import org.hibernate.AnnotationException;
import org.hibernate.EntityMode;
import org.hibernate.MappingException;
import org.hibernate.annotations.CacheConcurrencyStrategy;
import org.hibernate.annotations.OptimisticLockType;
import org.hibernate.annotations.PolymorphismType;
import org.hibernate.engine.OptimisticLockStyle;
import org.hibernate.engine.spi.ExecuteUpdateResultCheckStyle;
import org.hibernate.internal.util.StringHelper;
import org.hibernate.metamodel.binding.Caching;
import org.hibernate.metamodel.binding.CustomSQL;
import org.hibernate.metamodel.binding.InheritanceType;
import org.hibernate.metamodel.relational.Identifier;
import org.hibernate.metamodel.source.annotations.AnnotationBindingContext;
import org.hibernate.metamodel.source.annotations.HibernateDotNames;
import org.hibernate.metamodel.source.annotations.JPADotNames;
import org.hibernate.metamodel.source.annotations.JandexHelper;
import org.hibernate.metamodel.source.binder.TableSource;

/**
* Represents an entity or mapped superclass configured via annotations/xml.
*
* @author Hardy Ferentschik
*/
public class EntityClass extends ConfiguredClass {
  private final IdType idType;
  private final InheritanceType inheritanceType;
  private final TableSource tableSource;
  private final boolean hasOwnTable;
  private final String explicitEntityName;
  private final String customLoaderQueryName;
  private final List<String> synchronizedTableNames;
  private final String customTuplizer;
  private final int batchSize;

  private boolean isMutable;
  private boolean isExplicitPolymorphism;
  private OptimisticLockStyle optimisticLockStyle;
  private String whereClause;
  private String rowId;
  private Caching caching;
  private boolean isDynamicInsert;
  private boolean isDynamicUpdate;
  private boolean isSelectBeforeUpdate;
  private String customPersister;

  private CustomSQL customInsert;
  private CustomSQL customUpdate;
  private CustomSQL customDelete;

  private boolean isLazy;
  private String proxy;

  public EntityClass(
      ClassInfo classInfo,
      EntityClass parent,
      AccessType hierarchyAccessType,
      InheritanceType inheritanceType,
      AnnotationBindingContext context) {
    super( classInfo, hierarchyAccessType, parent, context );
    this.inheritanceType = inheritanceType;
    this.idType = determineIdType();
    this.hasOwnTable = definesItsOwnTable();
    this.explicitEntityName = determineExplicitEntityName();
    this.tableSource = createTableSource();
    this.customLoaderQueryName = determineCustomLoader();
    this.synchronizedTableNames = determineSynchronizedTableNames();
    this.customTuplizer = determineCustomTuplizer();
    this.batchSize = determineBatchSize();

    processHibernateEntitySpecificAnnotations();
    processCustomSqlAnnotations();
    processProxyGeneration();
  }

  private String determineExplicitEntityName() {
    final AnnotationInstance jpaEntityAnnotation = JandexHelper.getSingleAnnotation(
        getClassInfo(), JPADotNames.ENTITY
    );

    return JandexHelper.getValue( jpaEntityAnnotation, "name", String.class );
  }

  public InheritanceType getInheritanceType() {
    return inheritanceType;
  }

  public IdType getIdType() {
    return idType;
  }

  public boolean isExplicitPolymorphism() {
    return isExplicitPolymorphism;
  }

  public boolean isMutable() {
    return isMutable;
  }

  public OptimisticLockStyle getOptimisticLockStyle() {
    return optimisticLockStyle;
  }

  public String getWhereClause() {
    return whereClause;
  }

  public String getRowId() {
    return rowId;
  }

  public Caching getCaching() {
    return caching;
  }

  public TableSource getTableSource() {
    if ( definesItsOwnTable() ) {
      return tableSource;
    }
    else {
      return ( (EntityClass) getParent() ).getTableSource();
    }
  }

  public String getExplicitEntityName() {
    return explicitEntityName;
  }

  public String getEntityName() {
    return getConfiguredClass().getSimpleName();
  }

  public boolean isDynamicInsert() {
    return isDynamicInsert;
  }

  public boolean isDynamicUpdate() {
    return isDynamicUpdate;
  }

  public boolean isSelectBeforeUpdate() {
    return isSelectBeforeUpdate;
  }

  public String getCustomLoaderQueryName() {
    return customLoaderQueryName;
  }

  public CustomSQL getCustomInsert() {
    return customInsert;
  }

  public CustomSQL getCustomUpdate() {
    return customUpdate;
  }

  public CustomSQL getCustomDelete() {
    return customDelete;
  }

  public List<String> getSynchronizedTableNames() {
    return synchronizedTableNames;
  }

  public String getCustomPersister() {
    return customPersister;
  }

  public String getCustomTuplizer() {
    return customTuplizer;
  }

  public boolean isLazy() {
    return isLazy;
  }

  public String getProxy() {
    return proxy;
  }

  public int getBatchSize() {
    return batchSize;
  }

  public boolean isEntityRoot() {
    return getParent() == null;
  }

  private boolean definesItsOwnTable() {
    return !InheritanceType.SINGLE_TABLE.equals( inheritanceType ) || isEntityRoot();
  }

  private String processTableAnnotation() {
    AnnotationInstance tableAnnotation = JandexHelper.getSingleAnnotation(
        getClassInfo(),
        JPADotNames.TABLE
    );

    String tableName = null;
    if ( tableAnnotation != null ) {
      String explicitTableName = JandexHelper.getValue( tableAnnotation, "name", String.class );
      if ( StringHelper.isNotEmpty( explicitTableName ) ) {
        tableName = getContext().getNamingStrategy().tableName( explicitTableName );
        if ( getContext().isGloballyQuotedIdentifiers() && !Identifier.isQuoted( explicitTableName ) ) {
          tableName = StringHelper.quote( tableName );
        }
      }
    }
    return tableName;
  }

  private IdType determineIdType() {
    List<AnnotationInstance> idAnnotations = findIdAnnotations( JPADotNames.ID );
    List<AnnotationInstance> embeddedIdAnnotations = findIdAnnotations( JPADotNames.EMBEDDED_ID );

    if ( !idAnnotations.isEmpty() && !embeddedIdAnnotations.isEmpty() ) {
      throw new MappingException(
          "@EmbeddedId and @Id cannot be used together. Check the configuration for " + getName() + "."
      );
    }

    if ( !embeddedIdAnnotations.isEmpty() ) {
      if ( embeddedIdAnnotations.size() == 1 ) {
        return IdType.EMBEDDED;
      }
      else {
        throw new AnnotationException( "Multiple @EmbeddedId annotations are not allowed" );
      }
    }

    if ( !idAnnotations.isEmpty() ) {
      if ( idAnnotations.size() == 1 ) {
        return IdType.SIMPLE;
      }
      else {
        return IdType.COMPOSED;
      }
    }
    return IdType.NONE;
  }

  private List<AnnotationInstance> findIdAnnotations(DotName idAnnotationType) {
    List<AnnotationInstance> idAnnotationList = new ArrayList<AnnotationInstance>();
    if ( getClassInfo().annotations().get( idAnnotationType ) != null ) {
      idAnnotationList.addAll( getClassInfo().annotations().get( idAnnotationType ) );
    }
    ConfiguredClass parent = getParent();
    while ( parent != null && ( ConfiguredClassType.MAPPED_SUPERCLASS.equals( parent.getConfiguredClassType() ) ||
        ConfiguredClassType.NON_ENTITY.equals( parent.getConfiguredClassType() ) ) ) {
      if ( parent.getClassInfo().annotations().get( idAnnotationType ) != null ) {
        idAnnotationList.addAll( parent.getClassInfo().annotations().get( idAnnotationType ) );
      }
      parent = parent.getParent();

    }
    return idAnnotationList;
  }

  private void processHibernateEntitySpecificAnnotations() {
    final AnnotationInstance hibernateEntityAnnotation = JandexHelper.getSingleAnnotation(
        getClassInfo(), HibernateDotNames.ENTITY
    );

    // see HHH-6400
    PolymorphismType polymorphism = PolymorphismType.IMPLICIT;
    if ( hibernateEntityAnnotation != null && hibernateEntityAnnotation.value( "polymorphism" ) != null ) {
      polymorphism = PolymorphismType.valueOf( hibernateEntityAnnotation.value( "polymorphism" ).asEnum() );
    }
    isExplicitPolymorphism = polymorphism == PolymorphismType.EXPLICIT;

    // see HHH-6401
    OptimisticLockType optimisticLockType = OptimisticLockType.VERSION;
    if ( hibernateEntityAnnotation != null && hibernateEntityAnnotation.value( "optimisticLock" ) != null ) {
      optimisticLockType = OptimisticLockType.valueOf(
          hibernateEntityAnnotation.value( "optimisticLock" )
              .asEnum()
      );
    }
    optimisticLockStyle = OptimisticLockStyle.valueOf( optimisticLockType.name() );

    final AnnotationInstance hibernateImmutableAnnotation = JandexHelper.getSingleAnnotation(
        getClassInfo(), HibernateDotNames.IMMUTABLE
    );
    isMutable = hibernateImmutableAnnotation == null
        && hibernateEntityAnnotation != null
        && hibernateEntityAnnotation.value( "mutable" ) != null
        && hibernateEntityAnnotation.value( "mutable" ).asBoolean();


    final AnnotationInstance whereAnnotation = JandexHelper.getSingleAnnotation(
        getClassInfo(), HibernateDotNames.WHERE
    );
    whereClause = whereAnnotation != null && whereAnnotation.value( "clause" ) != null ?
        whereAnnotation.value( "clause" ).asString() : null;

    final AnnotationInstance rowIdAnnotation = JandexHelper.getSingleAnnotation(
        getClassInfo(), HibernateDotNames.ROW_ID
    );
    rowId = rowIdAnnotation != null && rowIdAnnotation.value() != null
        ? rowIdAnnotation.value().asString() : null;

    caching = determineCachingSettings();

    // see HHH-6397
    isDynamicInsert =
        hibernateEntityAnnotation != null
            && hibernateEntityAnnotation.value( "dynamicInsert" ) != null
            && hibernateEntityAnnotation.value( "dynamicInsert" ).asBoolean();

    // see HHH-6398
    isDynamicUpdate =
        hibernateEntityAnnotation != null
            && hibernateEntityAnnotation.value( "dynamicUpdate" ) != null
            && hibernateEntityAnnotation.value( "dynamicUpdate" ).asBoolean();


    // see HHH-6399
    isSelectBeforeUpdate =
        hibernateEntityAnnotation != null
            && hibernateEntityAnnotation.value( "selectBeforeUpdate" ) != null
            && hibernateEntityAnnotation.value( "selectBeforeUpdate" ).asBoolean();

    // Custom persister
    final String entityPersisterClass;
    final AnnotationInstance persisterAnnotation = JandexHelper.getSingleAnnotation(
        getClassInfo(), HibernateDotNames.PERSISTER
    );
    if ( persisterAnnotation == null || persisterAnnotation.value( "impl" ) == null ) {
      if ( hibernateEntityAnnotation != null && hibernateEntityAnnotation.value( "persister" ) != null ) {
        entityPersisterClass = hibernateEntityAnnotation.value( "persister" ).asString();
      }
      else {
        entityPersisterClass = null;
      }
    }
    else {
      if ( hibernateEntityAnnotation != null && hibernateEntityAnnotation.value( "persister" ) != null ) {
        // todo : error?
      }
      entityPersisterClass = persisterAnnotation.value( "impl" ).asString();
    }
    this.customPersister = entityPersisterClass;
  }

  private Caching determineCachingSettings() {
    final AnnotationInstance hibernateCacheAnnotation = JandexHelper.getSingleAnnotation(
        getClassInfo(), HibernateDotNames.CACHE
    );
    if ( hibernateCacheAnnotation != null ) {
      final org.hibernate.cache.spi.access.AccessType accessType = hibernateCacheAnnotation.value( "usage" ) == null
          ? getContext().getMappingDefaults().getCacheAccessType()
          : CacheConcurrencyStrategy.parse( hibernateCacheAnnotation.value( "usage" ).asEnum() )
          .toAccessType();
      return new Caching(
          hibernateCacheAnnotation.value( "region" ) == null
              ? getName()
              : hibernateCacheAnnotation.value( "region" ).asString(),
          accessType,
          hibernateCacheAnnotation.value( "include" ) != null
              && "all".equals( hibernateCacheAnnotation.value( "include" ).asString() )
      );
    }

    final AnnotationInstance jpaCacheableAnnotation = JandexHelper.getSingleAnnotation(
        getClassInfo(), JPADotNames.CACHEABLE
    );

    boolean cacheable = true; // true is the default
    if ( jpaCacheableAnnotation != null && jpaCacheableAnnotation.value() != null ) {
      cacheable = jpaCacheableAnnotation.value().asBoolean();
    }

    final boolean doCaching;
    switch ( getContext().getMetadataImplementor().getOptions().getSharedCacheMode() ) {
      case ALL: {
        doCaching = true;
        break;
      }
      case ENABLE_SELECTIVE: {
        doCaching = cacheable;
        break;
      }
      case DISABLE_SELECTIVE: {
        doCaching = jpaCacheableAnnotation == null || cacheable;
        break;
      }
      default: {
        // treat both NONE and UNSPECIFIED the same
        doCaching = false;
        break;
      }
    }

    if ( !doCaching ) {
      return null;
    }

    return new Caching(
        getName(),
        getContext().getMappingDefaults().getCacheAccessType(),
        true
    );
  }

  private TableSource createTableSource() {
    if ( !hasOwnTable ) {
      return null;
    }

    String schema = getContext().getMappingDefaults().getSchemaName();
    String catalog = getContext().getMappingDefaults().getCatalogName();

    final AnnotationInstance tableAnnotation = JandexHelper.getSingleAnnotation(
        getClassInfo(), JPADotNames.TABLE
    );
    if ( tableAnnotation != null ) {
      final AnnotationValue schemaValue = tableAnnotation.value( "schema" );
      if ( schemaValue != null ) {
        schema = schemaValue.asString();
      }

      final AnnotationValue catalogValue = tableAnnotation.value( "catalog" );
      if ( catalogValue != null ) {
        catalog = catalogValue.asString();
      }
    }

    if ( getContext().isGloballyQuotedIdentifiers() ) {
      schema = StringHelper.quote( schema );
      catalog = StringHelper.quote( catalog );
    }

    String tableName = processTableAnnotation();
    // use the simple table name as default in case there was no table annotation
    if ( tableName == null ) {
      if ( explicitEntityName == null ) {
        tableName = getConfiguredClass().getSimpleName();
      }
      else {
        tableName = explicitEntityName;
      }
    }
    return new TableSourceImpl( schema, catalog, tableName );
  }

  private String determineCustomLoader() {
    String customLoader = null;
    // Custom sql loader
    final AnnotationInstance sqlLoaderAnnotation = JandexHelper.getSingleAnnotation(
        getClassInfo(), HibernateDotNames.LOADER
    );
    if ( sqlLoaderAnnotation != null ) {
      customLoader = sqlLoaderAnnotation.value( "namedQuery" ).asString();
    }
    return customLoader;
  }

  private CustomSQL createCustomSQL(AnnotationInstance customSqlAnnotation) {
    if ( customSqlAnnotation == null ) {
      return null;
    }

    final String sql = customSqlAnnotation.value( "sql" ).asString();
    final boolean isCallable = customSqlAnnotation.value( "callable" ) != null
        && customSqlAnnotation.value( "callable" ).asBoolean();

    final ExecuteUpdateResultCheckStyle checkStyle = customSqlAnnotation.value( "check" ) == null
        ? isCallable
        ? ExecuteUpdateResultCheckStyle.NONE
        : ExecuteUpdateResultCheckStyle.COUNT
        : ExecuteUpdateResultCheckStyle.valueOf( customSqlAnnotation.value( "check" ).asEnum() );

    return new CustomSQL( sql, isCallable, checkStyle );
  }

  private void processCustomSqlAnnotations() {
    // Custom sql insert
    final AnnotationInstance sqlInsertAnnotation = JandexHelper.getSingleAnnotation(
        getClassInfo(), HibernateDotNames.SQL_INSERT
    );
    customInsert = createCustomSQL( sqlInsertAnnotation );

    // Custom sql update
    final AnnotationInstance sqlUpdateAnnotation = JandexHelper.getSingleAnnotation(
        getClassInfo(), HibernateDotNames.SQL_UPDATE
    );
    customUpdate = createCustomSQL( sqlUpdateAnnotation );

    // Custom sql delete
    final AnnotationInstance sqlDeleteAnnotation = JandexHelper.getSingleAnnotation(
        getClassInfo(), HibernateDotNames.SQL_DELETE
    );
    customDelete = createCustomSQL( sqlDeleteAnnotation );
  }

  private List<String> determineSynchronizedTableNames() {
    final AnnotationInstance synchronizeAnnotation = JandexHelper.getSingleAnnotation(
        getClassInfo(), HibernateDotNames.SYNCHRONIZE
    );
    if ( synchronizeAnnotation != null ) {
      final String[] tableNames = synchronizeAnnotation.value().asStringArray();
      return Arrays.asList( tableNames );
    }
    else {
      return Collections.emptyList();
    }
  }

  private String determineCustomTuplizer() {
    // Custom tuplizer
    String customTuplizer = null;
    final AnnotationInstance pojoTuplizerAnnotation = locatePojoTuplizerAnnotation();
    if ( pojoTuplizerAnnotation != null ) {
      customTuplizer = pojoTuplizerAnnotation.value( "impl" ).asString();
    }
    return customTuplizer;
  }

  private AnnotationInstance locatePojoTuplizerAnnotation() {
    final AnnotationInstance tuplizersAnnotation = JandexHelper.getSingleAnnotation(
        getClassInfo(), HibernateDotNames.TUPLIZERS
    );
    if ( tuplizersAnnotation == null ) {
      return null;
    }

    AnnotationInstance[] annotations = JandexHelper.getValue(
        tuplizersAnnotation,
        "value",
        AnnotationInstance[].class
    );
    for ( AnnotationInstance tuplizerAnnotation : annotations ) {
      if ( EntityMode.valueOf( tuplizerAnnotation.value( "entityModeType" ).asEnum() ) == EntityMode.POJO ) {
        return tuplizerAnnotation;
      }
    }
    return null;
  }

  private void processProxyGeneration() {
    // Proxy generation
    final AnnotationInstance hibernateProxyAnnotation = JandexHelper.getSingleAnnotation(
        getClassInfo(), HibernateDotNames.PROXY
    );
    if ( hibernateProxyAnnotation != null ) {
      isLazy = hibernateProxyAnnotation.value( "lazy" ) == null
          || hibernateProxyAnnotation.value( "lazy" ).asBoolean();
      if ( isLazy ) {
        final AnnotationValue proxyClassValue = hibernateProxyAnnotation.value( "proxyClass" );
        if ( proxyClassValue == null ) {
          proxy = getName();
        }
        else {
          proxy = proxyClassValue.asString();
        }
      }
      else {
        proxy = null;
      }
    }
    else {
      isLazy = true;
      proxy = getName();
    }
  }

  private int determineBatchSize() {
    final AnnotationInstance batchSizeAnnotation = JandexHelper.getSingleAnnotation(
        getClassInfo(), HibernateDotNames.BATCH_SIZE
    );
    return batchSizeAnnotation == null ? -1 : batchSizeAnnotation.value( "size" ).asInt();
  }

  class TableSourceImpl implements TableSource {
    private final String schema;
    private final String catalog;
    private final String tableName;

    TableSourceImpl(String schema, String catalog, String tableName) {
      this.schema = schema;
      this.catalog = catalog;
      this.tableName = tableName;
    }

    @Override
    public String getExplicitSchemaName() {
      return schema;
    }

    @Override
    public String getExplicitCatalogName() {
      return catalog;
    }

    @Override
    public String getExplicitTableName() {
      return tableName;
    }

    @Override
    public String getLogicalName() {
      // todo : (steve) hardy, not sure what to use here... null is ok for the primary table name.  this is part of the secondary table support.
      return null;
    }
  }
}
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