Our goal is to define a single place where all type information will reside. We define TypeConfiguration class which will have multiple type extensions for different features. This configuration will be set for the whole Ignite instance with ability to override it on per-cache level.
TypeConfiguration
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public class TypeConfiguration implements Serializable {
/** Serial version UID. */
private static final long serialVersionUID = 0L;
/**
* Type name. Can be one of three things:
* - Simple type name. Use it when type is not in classpath;
* - Fully qualified type name. Prefer it when type is in classpath to avoid conflicts.
* E.g. "my.package.employee.Address", "my.package.organization.Address";
* - Package wildcard. Must ends with ".*" in this case. E.g. "my.package.*".
*/
public classprivate TypeConfiguration {String typeName;
/** Type name Used to configure single type when it is not in classpath. */
privatepublic void setTypeName(String);
/** Used to configure specific class. Both typeName and packageName fields will be set. */
public void setClass(Class);
/** Affinity key field name. */
private String affKeyFieldName;
/** Type info extensions. */
private Map<Class<? extends TypeInfo>, ? extends TypeInfo> typeInfos;
public TypeInfo[] getTypeInfo() {...}
public void setTypeInfo(TypeInfo... typeInfos) {...}
public <T extends TypeInfo> T getTypeInfo(Class<T> infoCls) {...}
} |
Notes:
- TypeInfo's are set as varargs to follow general Ignite rules (e.g. IgniteConfiguration.setCacheConfiguration()).
- TypeInfo getter/setter do not have "s" at the end to follow general Ignite rules (e.g. IgniteConfiguration.setCacheConfiguration());
- Shouldn't we move "affKeyFieldName" to another TypeInfo, e.g. AffinityKeyTypeInfo?
TypeInfo
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public interface TypeInfo extends Serializable {
/** Whether implemenation supports single type. */
bool supportSingleType();
*
/** Whether implementation supports multiple types. */
public interface TypeInfo {bool supportMultipleTypes();
} |
Notes:
- Package configuration are only supported by PortableTypeInfo for now. For this reason it makes sense to add "support*" methods to prevent misconfiguration.
PersistenceTypeInfo
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public class PersistenceTypeInfo implements TypeInfo {
/**
*
Serial version UID. */
public class PersistenceTypeInfo implements TypeInfo { private static final long serialVersionUID = 0L;
/** Schema name in database. */
private String dbSchema;
/** Table name in database. */
private String dbTbl;
/** Persisted fields. */
@GridToStringInclude
private Collection<CacheTypeFieldMetadata>Collection<PersistenceField> fields;
} |
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public class PersistenceField implements Serializable {
/** Serial version UID. */
private static final long serialVersionUID = 0L;
/** Column name in database. */
private String dbFieldName;
/** Column JDBC type in database. */
private int dbFieldType;
/** Field name in java object. */
private String javaFieldName;
/** Corresponding java type. */
private Class<?> javaFieldType;
} |
Notes:
- Package wildcards are not supported.
PortableTypeInfo
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public class PortableTypeInfo implements TypeInfo {
/** IDSerial version mapperUID. */
private PortableIdMapper idMapperstatic final long serialVersionUID = 0L;
/** ID Serializermapper. */
private PortableSerializerPortableIdMapper serializeridMapper;
/** Use timestamp flagSerializer. */
private BooleanPortableSerializer useTsserializer;
/** MetaPortable datametadata enabled flag. When disabled queries and pretty toString() will not work. */
private Boolean metaDataEnabled = true;
} |
Notes:
- Supported for both types and package wildcards.
QueryTypeInfo
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public class QueryTypeInfo implements TypeInfo {
/** Serial version UID. */
*
private static final long serialVersionUID = 0L;
/** Fields. */
public class QueryTypeInfo implementsprivate TypeInfo {QueryField[] flds;
/** Field name-to-type map to be queried, in addition to indexed fieldsGroup indexes. */
private QueryCompoundIndex[] grpIdxs;
/** Fields to index as text. */
private String[] txtIdxs;
} |
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public class @GridToStringIncludeQueryField implements Serializable {
/** Serial version UID. */
private Map<String, Class<?>> qryFlds static final long serialVersionUID = 0L;
/** Field name-to-type map to index in ascending order. */
private String name;
/** Field class. */
private Class cls;
/** Whether @GridToStringIncludeto index the field. Disabled by default. */
private QueryFieldIndexType Map<String, Class<?>> ascFlds;
idxTyp = QueryFieldIndexType.NONE;
} |
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public enum QueryFieldIndexType {
/** Field name-to-type map to index in descendingDo not index the field. */
NONE,
/** Ascending order. */
@GridToStringIncludeASC,
private Map<String, /** Descending order. */
DESC
} |
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public class QueryCompoundIndex implements Serializable {Class<?>> descFlds;
/** FieldsSerial to index as textversion UID. */
@GridToStringIncludeprivate static final long serialVersionUID = 0L;
private Collection<String> txtFlds;
/** Index name. */
String name;
/** Fields to create group Participating fields. */
private QueryFieldInfo[] flds;
} |
Notes
QueryFieldInfo.cls is a problem for non-Java users, because they have to write ugly things like "java.lang.Integer" which is very hard to understand for non-Java users. Lets switch to enum here?
IgniteConfiguration
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public class IgniteConfiguration {
/** Type configurationsindexes for. */
private TypeConfiguration[] typeCfg;
public TypeConfiguration[] getTypeConfiguration();
public void setTypeConfiguration(TypeConfiguration... typeCfg);
} |
CacheConfiguration
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public class CacheConfiguration {
/** Type configurations. */@GridToStringInclude
private Map<String, LinkedHashMap<String, IgniteBiTuple<Class<?>, Boolean>>> grps TypeConfiguration[] typeCfg;
public TypeConfiguration[] getTypeConfiguration();
public void setTypeConfiguration(TypeConfiguration... typeCfg);
} |