spring-framework

Spring Framework

Tree: e72c49f4cf

Chris Beams 9fcfd7e827 Introduce ConfigurableEnvironment#merge Prior to this change, AbstractApplicationContext#setParent replaced the child context's Environment with the parent's Environment if available. This has the negative effect of potentially changing the type of the child context's Environment, and in any case causes property sources added directly against the child environment to be ignored. This situation could easily occur if a WebApplicationContext child had a non-web ApplicationContext set as its parent. In this case the parent Environment type would (likely) be StandardEnvironment, while the child Environment type would (likely) be StandardServletEnvironment. By directly inheriting the parent environment, critical property sources such as ServletContextPropertySource are lost entirely. This commit introduces the concept of merging an environment through the new ConfigurableEnvironment#merge method. Instead of replacing the child's environment with the parent's, AbstractApplicationContext#setParent now merges property sources as well as active and default profile names from the parent into the child. In this way, distinct environment objects are maintained with specific types and property sources preserved. See #merge Javadoc for additional details. Issue: SPR-9444, SPR-9439	14 years ago
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src	Introduce ConfigurableEnvironment#merge	14 years ago
.springBeans	Rename modules {org.springframework.=>spring-}	14 years ago

Chris Beams 9fcfd7e827 Introduce ConfigurableEnvironment#merge

Prior to this change, AbstractApplicationContext#setParent replaced the
child context's Environment with the parent's Environment if available.
This has the negative effect of potentially changing the type of the
child context's Environment, and in any case causes property sources
added directly against the child environment to be ignored. This
situation could easily occur if a WebApplicationContext child had a
non-web ApplicationContext set as its parent. In this case the parent
Environment type would (likely) be StandardEnvironment, while the child
Environment type would (likely) be StandardServletEnvironment. By
directly inheriting the parent environment, critical property sources
such as ServletContextPropertySource are lost entirely.

This commit introduces the concept of merging an environment through
the new ConfigurableEnvironment#merge method. Instead of replacing the
child's environment with the parent's,
AbstractApplicationContext#setParent now merges property sources as
well as active and default profile names from the parent into the
child. In this way, distinct environment objects are maintained with
specific types and property sources preserved. See #merge Javadoc for
additional details.

Issue: SPR-9444, SPR-9439

14 years ago

src

Introduce ConfigurableEnvironment#merge

14 years ago

.springBeans

Rename modules {org.springframework.*=>spring-*}

14 years ago