com.crashnote.core.config.helper.ConfigResolveOptions Maven / Gradle / Ivy
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/**
* Copyright (C) 2011-2012 Typesafe Inc.
*/
package com.crashnote.core.config.helper;
/**
* A set of options related to resolving substitutions. Substitutions use the
* ${foo.bar} syntax and are documented in the HOCON
* spec.
*
* This object is immutable, so the "setters" return a new object.
*
* Here is an example of creating a custom {@code ConfigResolveOptions}:
*
*
* ConfigResolveOptions options = ConfigResolveOptions.defaults()
* .setUseSystemEnvironment(false)
*
*
* In addition to {@link ConfigResolveOptions#defaults}, there's a prebuilt
* {@link ConfigResolveOptions#noSystem} which avoids looking at any system
* environment variables or other external system information. (Right now,
* environment variables are the only example.)
*/
public final class ConfigResolveOptions {
private final boolean useSystemEnvironment;
private ConfigResolveOptions(final boolean useSystemEnvironment) {
this.useSystemEnvironment = useSystemEnvironment;
}
/**
* Returns the default resolve options.
*
* @return the default resolve options
*/
public static ConfigResolveOptions defaults() {
return new ConfigResolveOptions(true);
}
/**
* Returns resolve options that disable any reference to "system" data
* (currently, this means environment variables).
*
* @return the resolve options with env variables disabled
*/
public static ConfigResolveOptions noSystem() {
return defaults().setUseSystemEnvironment(false);
}
/**
* Returns options with use of environment variables set to the given value.
*
* @param value
* true to resolve substitutions falling back to environment
* variables.
* @return options with requested setting for use of environment variables
*/
@SuppressWarnings("static-method")
public ConfigResolveOptions setUseSystemEnvironment(final boolean value) {
return new ConfigResolveOptions(value);
}
/**
* Returns whether the options enable use of system environment variables.
* This method is mostly used by the config lib internally, not by
* applications.
*
* @return true if environment variables should be used
*/
public boolean getUseSystemEnvironment() {
return useSystemEnvironment;
}
}