java.lang.Object
- com.google.protobuf.AbstractMessageLite
- - com.google.protobuf.AbstractMessage
  - - com.google.protobuf.GeneratedMessageV3
    - - com.alibaba.graphscope.gaia.proto.GraphAlgebra.Project

所有已实现的接口:

GraphAlgebra.ProjectOrBuilder, com.google.protobuf.Message, com.google.protobuf.MessageLite, com.google.protobuf.MessageLiteOrBuilder, com.google.protobuf.MessageOrBuilder, Serializable

封闭类:

GraphAlgebra
```
public static final class GraphAlgebra.Project
extends com.google.protobuf.GeneratedMessageV3
implements GraphAlgebra.ProjectOrBuilder
```
```
 To project a relation on certain attributes or further their properties
 
```
Protobuf type algebra.Project
另请参阅:

序列化表格

嵌套类概要

嵌套类
修饰符和类型	类	说明
`static class`	`GraphAlgebra.Project.Builder`	To project a relation on certain attributes or further their properties
`static class`	`GraphAlgebra.Project.ExprAlias`	Protobuf type `algebra.Project.ExprAlias`
`static interface`	`GraphAlgebra.Project.ExprAliasOrBuilder`

从类继承的嵌套类/接口 com.google.protobuf.GeneratedMessageV3
com.google.protobuf.GeneratedMessageV3.BuilderParent, com.google.protobuf.GeneratedMessageV3.ExtendableBuilder<MessageT extends com.google.protobuf.GeneratedMessageV3.ExtendableMessage<MessageT>,BuilderT extends com.google.protobuf.GeneratedMessageV3.ExtendableBuilder<MessageT,BuilderT>>, com.google.protobuf.GeneratedMessageV3.ExtendableMessage<MessageT extends com.google.protobuf.GeneratedMessageV3.ExtendableMessage<MessageT>>, com.google.protobuf.GeneratedMessageV3.ExtendableMessageOrBuilder<MessageT extends com.google.protobuf.GeneratedMessageV3.ExtendableMessage<MessageT>>, com.google.protobuf.GeneratedMessageV3.FieldAccessorTable, com.google.protobuf.GeneratedMessageV3.UnusedPrivateParameter

从类继承的嵌套类/接口 com.google.protobuf.AbstractMessageLite
com.google.protobuf.AbstractMessageLite.InternalOneOfEnum

字段概要

字段
修饰符和类型字段说明

static int IS_APPEND_FIELD_NUMBER

static int MAPPINGS_FIELD_NUMBER

static int META_DATA_FIELD_NUMBER
- 从类继承的字段 com.google.protobuf.GeneratedMessageV3
  alwaysUseFieldBuilders, unknownFields
- 从类继承的字段 com.google.protobuf.AbstractMessage
  memoizedSize
- 从类继承的字段 com.google.protobuf.AbstractMessageLite
  memoizedHashCode

方法概要

所有方法静态方法实例方法具体方法
修饰符和类型	方法	说明
`boolean`	`equals(Object obj)`
`static GraphAlgebra.Project`	`getDefaultInstance()`
`GraphAlgebra.Project`	`getDefaultInstanceForType()`
`static com.google.protobuf.Descriptors.Descriptor`	`getDescriptor()`
`boolean`	`getIsAppend()`	An indicator to tell the runtime whether the projected value is appending to or replacing existing relation.
`GraphAlgebra.Project.ExprAlias`	`getMappings(int index)`	A list of [expression -> alias] to be projected from the graph relation.
`int`	`getMappingsCount()`	A list of [expression -> alias] to be projected from the graph relation.
`List<GraphAlgebra.Project.ExprAlias>`	`getMappingsList()`	A list of [expression -> alias] to be projected from the graph relation.
`GraphAlgebra.Project.ExprAliasOrBuilder`	`getMappingsOrBuilder(int index)`	A list of [expression -> alias] to be projected from the graph relation.
`List<? extends GraphAlgebra.Project.ExprAliasOrBuilder>`	`getMappingsOrBuilderList()`	A list of [expression -> alias] to be projected from the graph relation.
`GraphAlgebra.MetaData`	`getMetaData(int index)`	The datatype of output results
`int`	`getMetaDataCount()`	The datatype of output results
`List<GraphAlgebra.MetaData>`	`getMetaDataList()`	The datatype of output results
`GraphAlgebra.MetaDataOrBuilder`	`getMetaDataOrBuilder(int index)`	The datatype of output results
`List<? extends GraphAlgebra.MetaDataOrBuilder>`	`getMetaDataOrBuilderList()`	The datatype of output results
`com.google.protobuf.Parser<GraphAlgebra.Project>`	`getParserForType()`
`int`	`getSerializedSize()`
`int`	`hashCode()`
`protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable`	`internalGetFieldAccessorTable()`
`boolean`	`isInitialized()`
`static GraphAlgebra.Project.Builder`	`newBuilder()`
`static GraphAlgebra.Project.Builder`	`newBuilder(GraphAlgebra.Project prototype)`
`GraphAlgebra.Project.Builder`	`newBuilderForType()`
`protected GraphAlgebra.Project.Builder`	`newBuilderForType(com.google.protobuf.GeneratedMessageV3.BuilderParent parent)`
`protected Object`	`newInstance(com.google.protobuf.GeneratedMessageV3.UnusedPrivateParameter unused)`
`static GraphAlgebra.Project`	`parseDelimitedFrom(InputStream input)`
`static GraphAlgebra.Project`	`parseDelimitedFrom(InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)`
`static GraphAlgebra.Project`	`parseFrom(byte[] data)`
`static GraphAlgebra.Project`	`parseFrom(byte[] data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)`
`static GraphAlgebra.Project`	`parseFrom(com.google.protobuf.ByteString data)`
`static GraphAlgebra.Project`	`parseFrom(com.google.protobuf.ByteString data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)`
`static GraphAlgebra.Project`	`parseFrom(com.google.protobuf.CodedInputStream input)`
`static GraphAlgebra.Project`	`parseFrom(com.google.protobuf.CodedInputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)`
`static GraphAlgebra.Project`	`parseFrom(InputStream input)`
`static GraphAlgebra.Project`	`parseFrom(InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)`
`static GraphAlgebra.Project`	`parseFrom(ByteBuffer data)`
`static GraphAlgebra.Project`	`parseFrom(ByteBuffer data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)`
`static com.google.protobuf.Parser<GraphAlgebra.Project>`	`parser()`
`GraphAlgebra.Project.Builder`	`toBuilder()`
`void`	`writeTo(com.google.protobuf.CodedOutputStream output)`

从类继承的方法 com.google.protobuf.GeneratedMessageV3
canUseUnsafe, computeStringSize, computeStringSizeNoTag, emptyBooleanList, emptyDoubleList, emptyFloatList, emptyIntList, emptyLongList, getAllFields, getDescriptorForType, getField, getOneofFieldDescriptor, getRepeatedField, getRepeatedFieldCount, getUnknownFields, hasField, hasOneof, internalGetMapField, isStringEmpty, makeExtensionsImmutable, makeMutableCopy, mergeFromAndMakeImmutableInternal, mutableCopy, mutableCopy, mutableCopy, mutableCopy, mutableCopy, newBooleanList, newBuilderForType, newDoubleList, newFloatList, newIntList, newLongList, parseDelimitedWithIOException, parseDelimitedWithIOException, parseUnknownField, parseUnknownFieldProto3, parseWithIOException, parseWithIOException, parseWithIOException, parseWithIOException, serializeBooleanMapTo, serializeIntegerMapTo, serializeLongMapTo, serializeStringMapTo, writeReplace, writeString, writeStringNoTag

从类继承的方法 com.google.protobuf.AbstractMessage
findInitializationErrors, getInitializationErrorString, hashBoolean, hashEnum, hashEnumList, hashFields, hashLong, toString

从类继承的方法 com.google.protobuf.AbstractMessageLite
addAll, addAll, checkByteStringIsUtf8, toByteArray, toByteString, writeDelimitedTo, writeTo

从类继承的方法 java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

从接口继承的方法 com.google.protobuf.MessageLite
toByteArray, toByteString, writeDelimitedTo, writeTo

从接口继承的方法 com.google.protobuf.MessageOrBuilder
findInitializationErrors, getAllFields, getDescriptorForType, getField, getInitializationErrorString, getOneofFieldDescriptor, getRepeatedField, getRepeatedFieldCount, getUnknownFields, hasField, hasOneof

字段详细资料
- MAPPINGS_FIELD_NUMBER
```
public static final int MAPPINGS_FIELD_NUMBER
```
  另请参阅:
  
  常量字段值
- IS_APPEND_FIELD_NUMBER
```
public static final int IS_APPEND_FIELD_NUMBER
```
  另请参阅:
  
  常量字段值
- META_DATA_FIELD_NUMBER
```
public static final int META_DATA_FIELD_NUMBER
```
  另请参阅:
  
  常量字段值

方法详细资料

newInstance

protected Object newInstance(com.google.protobuf.GeneratedMessageV3.UnusedPrivateParameter unused)

覆盖:: newInstance 在类中 com.google.protobuf.GeneratedMessageV3

getDescriptor

public static final com.google.protobuf.Descriptors.Descriptor getDescriptor()

internalGetFieldAccessorTable
```
protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable internalGetFieldAccessorTable()
```
指定者:

internalGetFieldAccessorTable 在类中 com.google.protobuf.GeneratedMessageV3