fix(common): prevent repeated application of HttpParams mutations #29045
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Previously, an instance of HttpParams would retain its list of mutations after they have been materialized as a result of a read operation. Not only does this unnecessarily hold onto memory, more importantly does it introduce a bug where branching of off a materialized instance would reconsider the set of mutations that had already been applied, resulting in repeated application of mutations. This commit fixes the bug by clearing the list of pending mutations after they have been materialized, such that they will not be considered once again for branched off instances. Fixes angular#20430
JoostK
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alxhub
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Apr 19, 2019
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benlesh
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Apr 23, 2019
…9045) Previously, an instance of HttpParams would retain its list of mutations after they have been materialized as a result of a read operation. Not only does this unnecessarily hold onto memory, more importantly does it introduce a bug where branching of off a materialized instance would reconsider the set of mutations that had already been applied, resulting in repeated application of mutations. This commit fixes the bug by clearing the list of pending mutations after they have been materialized, such that they will not be considered once again for branched off instances. Fixes #20430 PR Close #29045
BioPhoton
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May 21, 2019
…gular#29045) Previously, an instance of HttpParams would retain its list of mutations after they have been materialized as a result of a read operation. Not only does this unnecessarily hold onto memory, more importantly does it introduce a bug where branching of off a materialized instance would reconsider the set of mutations that had already been applied, resulting in repeated application of mutations. This commit fixes the bug by clearing the list of pending mutations after they have been materialized, such that they will not be considered once again for branched off instances. Fixes angular#20430 PR Close angular#29045
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PR Checklist
Please check if your PR fulfills the following requirements:
PR Type
What kind of change does this PR introduce?
What is the current behavior?
Previously, an instance of HttpParams would retain its list of mutations
after they have been materialized as a result of a read operation. Not
only does this unnecessarily hold onto memory, more importantly does it
introduce a bug where branching of off a materialized instance would
reconsider the set of mutations that had already been applied, resulting
in repeated application of mutations.
Issue Number: #20430
What is the new behavior?
This commit fixes the bug by clearing the list of pending mutations
after they have been materialized, such that they will not be considered
once again for branched off instances.
Does this PR introduce a breaking change?
Other information
Alternative to #20610, however this PR keeps the lazy mutation mechanism intact and is therefore much smaller.
/cc @alxhub