import org.opensaml.messaging.context.BaseContext; //导入依赖的package包/类
/**
 * Helper method to locate authentication response context.
 * 
 * @param ctx
 *            any context child of profile request context,
 * @return Inbound message context or null if not found.
 */
@SuppressWarnings("rawtypes")
private OIDCAuthenticationResponseContext getAuthenticationResponseContext(BaseContext ctx) {
    if (ctx == null) {
        return null;
    }
    BaseContext ctxRunner = ctx;
    while (ctxRunner.getParent() != null) {
        ctxRunner = ctxRunner.getParent();
    }
    if (ctxRunner instanceof ProfileRequestContext) {
        return ((ProfileRequestContext) ctxRunner).getOutboundMessageContext().getSubcontext(
                OIDCAuthenticationResponseContext.class, false);
    }
    return null;
}
 

import org.opensaml.messaging.context.BaseContext; //导入依赖的package包/类
/**
 * Helper method to locate outbound message context.
 * 
 * @param ctx
 *            any context child of profile request context,
 * @return Outbound message context or null if not found.
 */
@SuppressWarnings("rawtypes")
private MessageContext getOutboundMessageContext(BaseContext ctx) {
    if (ctx == null) {
        return null;
    }
    BaseContext ctxRunner = ctx;
    while (ctxRunner.getParent() != null) {
        ctxRunner = ctxRunner.getParent();
    }
    if (ctxRunner instanceof ProfileRequestContext) {
        return ((ProfileRequestContext) ctxRunner).getOutboundMessageContext();
    }
    return null;
}
 

import org.opensaml.messaging.context.BaseContext; //导入依赖的package包/类
protected final void addContext(final SAML2MetadataResolver entityId, final BaseContext parentContext,
                                final QName elementName) {
    final EntityDescriptor entityDescriptor;
    final RoleDescriptor roleDescriptor;
    try {
        final CriteriaSet set = new CriteriaSet();
        set.add(new EntityIdCriterion(entityId.getEntityId()));

        entityDescriptor = this.metadata.resolveSingle(set);
        if (entityDescriptor == null) {
            throw new SAMLException("Cannot find entity " + entityId + " in metadata provider");
        }
        final List<RoleDescriptor> list = entityDescriptor.getRoleDescriptors(elementName,
                SAMLConstants.SAML20P_NS);
        roleDescriptor = CommonHelper.isNotEmpty(list) ? list.get(0) : null;

        if (roleDescriptor == null) {
            throw new SAMLException("Cannot find entity " + entityId + " or role "
                    + elementName + " in metadata provider");
        }

    } catch (final ResolverException e) {
        throw new SAMLException("An error occured while getting IDP descriptors", e);
    }
    final SAMLMetadataContext mdCtx = parentContext.getSubcontext(SAMLMetadataContext.class, true);
    mdCtx.setEntityDescriptor(entityDescriptor);
    mdCtx.setRoleDescriptor(roleDescriptor);
}