* Using the definition of vid.

* Change the naming flavor of reserved property.

* Update.

Co-authored-by: Yee <2520865+yixinglu@users.noreply.github.com>
Co-authored-by: laura-ding <48548375+laura-ding@users.noreply.github.com>

* Fix Set Validator

* Add tests for set validator

* Fix comment

* add limit and sort

* delete extra space

* add sort validate

* add test

* rebase upstream

* update

* add null test

* rebase upstream

* add union iterator eraseRange

* address dutor's comment

* address comment

* update

* address comments

* rebase upstream

Co-authored-by: dutor <440396+dutor@users.noreply.github.com>

* Add alter executor

* rebase upstream

* rebase upstream

* rebase upstream

* rebase upstream

Co-authored-by: dutor <440396+dutor@users.noreply.github.com>

* Collect values from sequential iter.

* Update.

* Add comment.

* Add the auth and permission checking to graph service.

* Fix something not nice.

* Fix link error.

* Remove the ValidatorTest.cpp.

* Fix link.

* Fix link.

* Fix link.

* Fix link.

* Fix link.

Disable GetNeighbors Iterator

Co-authored-by: dutor <440396+dutor@users.noreply.github.com>

* fix iterator getTagprop and add hasher for row*

* modify test

* add filter and dedup executor

* rebase upstream

* rebase upstream

* rebase upstream

* use row*

* add test

* address comment

* modify YieldSentence

* address comment

* address comment

* address comment

Co-authored-by: dutor <440396+dutor@users.noreply.github.com>

Co-authored-by: dutor <440396+dutor@users.noreply.github.com>

* Support DML,DDL to use inputNode

* address comment

* rebase upstream

* reabse upstream

* update

* address comments

* add test

Co-authored-by: dutor <440396+dutor@users.noreply.github.com>

Co-authored-by: Yee <2520865+yixinglu@users.noreply.github.com>

Fix comment
Move statusOr
Replace hard code vid string
Rename processList function

* Base implement.

* Deduce the props needed.

* Deduce type for expression.

* Validate the srcs.

* Add prop type to value type method.

* Add test.

* Implement one step plan.

* Fix require space.

* Adapt the operator.

* Report error for the unsuppoted feature.

* Fix test.

* Fix only tag props.

* Verify the plan.

* Address comment.

* Rebase and fic conflict.

Co-authored-by: Yee <2520865+yixinglu@users.noreply.github.com>
Co-authored-by: dutor <440396+dutor@users.noreply.github.com>

* Add set executors and get row interface of iterator

* Cleanup

* Handle right empty data set

* Fix data set column names

* Add more tests

* Add all empty tests

* Add datacollect.

* Implement data collect.

* Make data collect executor.

* Update the subgraph

* Support *.prop.

* Address comment.

* Add test.

* Check data type.

* Rebase and fix compile.

* Address comment.

Co-authored-by: Yee <2520865+yixinglu@users.noreply.github.com>

* Remove the duplicate status web API, already contained in common webservice.

* Fix the lack header.

Co-authored-by: dutor <440396+dutor@users.noreply.github.com>

* Add first statement validation for SequentialValidator

* Get first sentence of PipedSentence

* Add tests

* Refactor Subgraph test

* Refactor first sentence test

* Add more tests

Co-authored-by: dutor <440396+dutor@users.noreply.github.com>

* Implement get neighbors.

* Update get neighbors.

* Add test for get neighbors.

* Rebase and fix test.

* Ignore bad data and return if empty input.

* Clear the members.

* Fix test.

* Modify the get neighbors.

* Fix link and add log.

* Fix linking for clang.

* fixed lex warning, deleted duplicate line

* Fix missing debug info of libstdc++ when build with Clang

Co-authored-by: dutor <440396+dutor@users.noreply.github.com>

* Add comment,

* Update the format of the storage response.

* Add getVertex and getEdge.

* Fix test.

* Add test for getVertex and getEdge.

* Handle the bad head and add test.

* Add bench mark

* Address comment.

* Add batch interface for subgraph.

* Address comment.

* Address comment.

Co-authored-by: dutor <440396+dutor@users.noreply.github.com>

* Fix bfs tranverse plan verification

* Use loop to replace recursive

* Add ValidatorTestBase

* Add select executor and loop executor.

* Rebase and fix conflict.

* Address comment.

* Address comment.

* add MockSchemaManager

* fix clang build error

* Fix ExecResult and Iterator value error

* Add constant quatifier

* Add reset to position interface in iterator

* Fix error

* Refactor default parameter value

* Fix typo

* Add verify plan method.

* Fix plan node dependency.

* Update toString and << for PlanNode.

* remove INT type vid in parser

* add result check

* fix insert edge

* fix build failed

* address comment

* erase

* rename begin to reset

* Implement get neighbors.

* Implement project.

* Add ut for project executor.

* Check result of the project.

* Disable subgraph test.

* Address @yixinglu's comment.

* Rebase and fix conflict.

* Eval result column names in validator.

* Modify Aggregate and add agg functions.

* Implement aggregate.

* Test aggregate.

* Return a copy of iterator in exec result and add more test for aggregate.

* More test for aggregate.

* Rebase.

* Address comment.

* Refactor the avg of aggregate.

* Delete agg func file and test aggregate bit and/or/xor.

* Add stdev test and add comment.

* Refactor agg test and fix collect test.

* Adpat the change of common.

* Remove aggregate.

* Remove get neighbors.

* Remove subgraph test.

* Add more test.

* Fix compile.

* Refactor scheduler

* Rename util object

* Cleanup

* Add an implement of expression context.

* Fix compiling.

* Implement get_var for expression context.

* Implement get versioned var.

* Fix test.

* Add test for expression context.

* Replace ExecutionContext with QueryContext.

* Implement the k-hop expansion part of sungraph-plan.

* Refactor the context.

* Fix test.

* Add iter/default_iter/state/result.

* Add get_neighbor_iter.

* Rebase and fix conflict.

* Add move value and fix schema test.

* update.

* Make result ctor private.

* Update Iterator.

* Add sequential iter.

* Add const empty result and update get subgraph validator.

* Add test for iterator.

* Rebase and fix conflict.

* Address @yixinglu's comment.

* Update with the change of expressions.