Packages

trait KeyValueStoreMetadata[T] extends TableBasedMetadata[T]

Table-based metadata implementation for key-value stores. As with TableBasedMetadata, the metadata is persisted in a database table. The underlying table will be lazily created when required. Metadata values are cached with a configurable timeout to save repeated database reads.

T

type param

Linear Supertypes
TableBasedMetadata[T], LazyLogging, GeoMesaMetadata[T], Closeable, AutoCloseable, AnyRef, Any
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Inherited
  1. KeyValueStoreMetadata
  2. TableBasedMetadata
  3. LazyLogging
  4. GeoMesaMetadata
  5. Closeable
  6. AutoCloseable
  7. AnyRef
  8. Any
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Visibility
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Abstract Value Members

  1. abstract def close(): Unit
    Definition Classes
    Closeable → AutoCloseable
    Annotations
    @throws( classOf[java.io.IOException] )
  2. abstract def serializer: MetadataSerializer[T]

    Serializer

    Serializer

    Definition Classes
    TableBasedMetadata

Concrete Value Members

  1. def backup(typeName: String): Unit

    Create a back up of this metadata

    Create a back up of this metadata

    typeName

    simple feature type name

    Definition Classes
    TableBasedMetadata → GeoMesaMetadata
  2. def delete(typeName: String): Unit

    Deletes all values associated with a given feature type

    Deletes all values associated with a given feature type

    typeName

    simple feature type name

    Definition Classes
    TableBasedMetadata → GeoMesaMetadata
  3. def encodeRow(typeName: String, key: String): Array[Byte]
  4. def ensureTableExists(): Unit
    Definition Classes
    TableBasedMetadata
  5. def getFeatureTypes: Array[String]

    Returns existing simple feature types

    Returns existing simple feature types

    returns

    simple feature type names

    Definition Classes
    TableBasedMetadata → GeoMesaMetadata
  6. def insert(typeName: String, kvPairs: Map[String, T]): Unit

    Insert multiple values at once - may be more efficient than single inserts

    Insert multiple values at once - may be more efficient than single inserts

    typeName

    simple feature type name

    kvPairs

    key/values

    Definition Classes
    TableBasedMetadata → GeoMesaMetadata
  7. def insert(typeName: String, key: String, value: T): Unit

    Insert a value - any existing value under the given key will be overwritten

    Insert a value - any existing value under the given key will be overwritten

    typeName

    simple feature type name

    key

    key

    value

    value

    Definition Classes
    TableBasedMetadata → GeoMesaMetadata
  8. def invalidateCache(typeName: String, key: String): Unit

    Invalidates any cached value for the given key

    Invalidates any cached value for the given key

    typeName

    simple feature type name

    key

    key

    Definition Classes
    TableBasedMetadata → GeoMesaMetadata
  9. def read(typeName: String, key: String, cache: Boolean): Option[T]

    Reads a value

    Reads a value

    typeName

    simple feature type name

    key

    key

    cache

    may return a cached value if true, otherwise may use a slower lookup

    returns

    value, if present

    Definition Classes
    TableBasedMetadata → GeoMesaMetadata
  10. def readRequired(typeName: String, key: String): T

    Reads a value.

    Reads a value. Throws an exception if value is missing

    typeName

    simple feature type name

    key

    key

    returns

    value

    Definition Classes
    GeoMesaMetadata
  11. def remove(typeName: String, keys: Seq[String]): Unit

    Delete multiple keys at once - may be more efficient than single deletes

    Delete multiple keys at once - may be more efficient than single deletes

    typeName

    simple feature type name

    keys

    keys

    Definition Classes
    TableBasedMetadata → GeoMesaMetadata
  12. def remove(typeName: String, key: String): Unit

    Delete a key

    Delete a key

    typeName

    simple feature type name

    key

    key

    Definition Classes
    TableBasedMetadata → GeoMesaMetadata
  13. def resetCache(): Unit

    table cache should be cleared up when catalog is deleted in database

    table cache should be cleared up when catalog is deleted in database

    Definition Classes
    TableBasedMetadata → GeoMesaMetadata
  14. def scan(typeName: String, prefix: String, cache: Boolean): Seq[(String, T)]

    Scan for keys starting with a given prefix

    Scan for keys starting with a given prefix

    typeName

    simple feature type name

    prefix

    key prefix

    cache

    may return a cached value if true, otherwise may use a slower lookup

    returns

    keys -> values

    Definition Classes
    TableBasedMetadata → GeoMesaMetadata
  15. val typeNameSeparator: Char